Takayuki Yanagida

J-GLOBAL         Last updated: Dec 28, 2018 at 20:57
 
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Name
Takayuki Yanagida
E-mail
t-yanagidams.naist.jp
Affiliation
Nara Institute of Science and Technology
Section
Frontier Research Academy for Young Researchers

Research Interests

 
 

Research Areas

 
 

Published Papers

 
Yusuke Onoda, Hiromi Kimura, Takumi Kato, Kentaro Fukuda, Noriaki Kawaguchi, Takayuki Yanagida
Optik   181 50-56   Mar 2019
© 2018 Elsevier GmbH We synthesized non- and Eu-doped AlN ceramics by the spark plasma sintering (SPS) method and characterized their photoluminsecence (PL) and thermally stimutrated luminescence (TSL) properties. In the PL properties, the non-dop...
Takayuki Yanagida, Kenichi Watanabe, Go Okada, Noriaki Kawaguchi
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   919 64-67   Mar 2019
© 2018 Elsevier B.V. In this research, we found that some undoped crystals (LiAlO2 and LiGaO2) show pulse shape discrimination (PSD) capabilities, and we report some basic scintillation and PSD properties of these crystals. These two crystals show...
Takayuki Yanagida, Go Okada, Noriaki Kawaguchi
Journal of Luminescence   207 14-21   Mar 2019
© 2018 Elsevier B.V. Storage phosphors have been used for luminescent-type dosimeters to measure radiation dose. Common storage-luminescence phenomena are optically-stimulated luminescence (OSL), thermally-stimulated luminescence (TSL) and radio-p...
Hirokazu Masai, Go Okada, Toshiaki Ina, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Luminescence   207 316-320   Mar 2019
© 2018 Elsevier B.V. In this study, the photoluminescence (PL) and X-ray-induced scintillation of trivalent cerium, Ce3+, in strontium borate glasses was examined. As no precipitated crystallites were observed, the slight coloration of the glasses...
Naoki Kawano, Takumi Kato, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Optical Materials   88 67-73   Feb 2019
© 2018 Elsevier B.V. We synthesized Al2O3 transparent ceramics doped with different concentrations of Eu (0.001, 0.01, 0.1 and 1.0%) by the spark plasma sintering (SPS) method, and then we investigated their photoluminescence (PL), scintillation a...
Noriaki Kawaguchi, Daisuke Nakauchi, Go Okada, Naoki Kawano, Takayuki Yanagida
Journal of Luminescence   206 634-638   Feb 2019
© 2018 Elsevier B.V. We have investigated radioluminescence and thermoluminescence (TL) properties of the Nd-doped LiCaAlF6 single crystal. The sample showed the radioluminescence peaks originating from both the 5d-4f and 4f-4f transitions of the ...
Hirokazu Masai, Go Okada, Aya Torimoto, Takaaki Usui, Noriaki Kawaguchi, Takayuki Yanagida
Scientific Reports   8    Dec 2018
© 2018 The Author(s). The efficiency of X-ray-induced scintillation in glasses roughly depends on both the effective atomic number Zeffand the photoluminescence quantum efficiency Qeffof glass, which are useful tools for searching high-performance...
Naoki Kawano, Masaki Akatsuka, Hiromi Kimura, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Radiation Measurements   117 52-56   Oct 2018
© 2018 Elsevier Ltd We synthesized NaPO3-Al(PO3)3glasses with different concentrations of Tb (0.3, 1.0, 3.0 and 10.0 mol%) by the conventional melt-quenching technique. After the synthesis, their photoluminescence (PL), scintillation and TSL prope...
Taiki Ogawa, Daisuke Nakauchi, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Luminescence   202 409-413   Oct 2018
© 2018 Elsevier B.V. Undoped and Ce-doped Sr2Al2SiO7bulk crystals with different concentrations of Ce were synthesized by the floating zone method. Under X-ray irradiation, the both undoped and Ce-doped samples show scintillation with broad emissi...
Yutaka Fujimoto, Keiichiro Saeki, Daisuke Nakauchi, Haruki Fukada, Takayuki Yanagida, Hiroki Kawamoto, Masanori Koshimizu, Keisuke Asai
Materials Research Bulletin   105 291-295   Sep 2018
© 2018 Elsevier Ltd Photoluminescence, photoacoustic, and scintillation properties are reported for 1.0, 3.0, 5.0, and 10 mol% Te4+-doped Cs2HfCl6crystals grown using the vertical Bridgman–Stockbarger method. The UV − VIS light excited emission sp...
Takumi Kato, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Kentaro Fukuda, Takayuki Yanagida
Optik   168 956-962   Sep 2018
© 2018 Elsevier GmbH We have developed SrF2translucent ceramic by using the spark plasma sintering (SPS) method, and investigated scintillation properties and thermally stimulated luminescence (TSL) glow curves, in comparison with a SrF2crystal. B...
Naoki Kawano, Noriaki Kawaguchi, Kentaro Fukuda, Go Okada, Takayuki Yanagida
Optical Materials   82 60-64   Aug 2018
© 2018 Elsevier B.V. Scintillation and dosimetric properties of6LiF-CaF2eutectic composites doped with different concentrations of Ce (0, 0.1 and 0.5%) were investigated. The Ce-doped samples showed scintillation due to the 5 d-4f transitions of C...
Yuki Usui, Takumi Kato, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Luminescence   200 81-86   Aug 2018
© 2018 Elsevier B.V. A series of bulk Ga2O3were prepared by four different methods (Floating Zone (FZ), Edge-defined Film-fed Grown (EFG), spark plasma sintering (SPS) and conventional sintering in air) to obtain in single crystal and ceramic form...
Kenji Shinozaki, Yutaka Fujimoto, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida, Tomoko Akai, Masanori Koshimizu, Keisuke Asai
Journal of Materials Science: Materials in Electronics   29 11824-11829   Jul 2018
© 2018, Springer Science+Business Media, LLC, part of Springer Nature. We have investigated the X-ray induced luminescence (XRL) and the lifetime of a series of yEu2O3–50BaF2–xAl2O3–(50-x)B2O3(x = 0–25, y = 1–10, in mol%) glasses, which exhibit hi...
Fumiya Nakamura, Takumi Kato, Go Okada, Naoki Kawano, Noriaki Kawaguchi, Takayuki Yanagida
Materials Letters   221 51-53   Jun 2018
© 2018 In this letter, we repot a new radio-photoluminescence (RPL) material. The RPL was observed non-doped Li2CO3ceramics sintered in vacuum. Under 340 ± 40 nm excitation, a photoluminescence (PL) emission peak appeared around 470 nm, the intens...
Yuki Usui, Daisuke Nakauchi, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Physics and Chemistry of Solids   117 36-41   Jun 2018
© 2018 Elsevier Ltd Sn-doped Ga2O3single crystals were synthesized by the Floating Zone (FZ) method. In photoluminescence (PL) under the excitation wavelength of 280 nm, we observed two types of luminescence: (1) defect luminescence due to recombi...
Hiroki Kawamoto, Yutaka Fujimoto, Masanori Koshimizu, Go Okada, Takayuki Yanagida, Keisuke Asai
Japanese Journal of Applied Physics   57    Jun 2018
© 2018 The Japan Society of Applied Physics. Ag-doped phosphate glasses have widely been used as radiophotoluminescence (RPL) dosimeters. However, the RPL center formation process is not fully understood. In this study, we investigated the RPL cen...
Naoki Kawano, Noriaki Kawaguchi, Kentaro Fukuda, Go Okada, Takayuki Yanagida
Journal of Materials Science: Materials in Electronics   29 8964-8969   Jun 2018
© 2018, Springer Science+Business Media, LLC, part of Springer Nature. We investigated scintillation and dosimeter properties of6LiF/CaF2eutectic composites doped with different concentrations of Eu (0.005, 0.02, 0.1, 0.3, and 1.0). In the photolu...
Shotaro Hirano, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Radiation Measurements   112 16-20   May 2018
© 2018 Elsevier Ltd Photoluminescence (PL) and thermally-stimulated luminescence (TSL) properties of Sn-doped zinc sodium phosphate glasses were evaluated. We synthesized the glass samples by the conventional melt-quenching method under ambient at...
Takuya Igashira, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Optical Materials   79 232-236   May 2018
© 2018 Elsevier B.V. Apatite crystals with chemical compositions of 0.5% Ce-doped Sr2(Gd1-xLux)8(SiO4)6O2(x = 0.1, 0.2, 0.4, 0.5, 0.6) were synthesized by the Floating Zone method, and then we evaluated their photoluminescence (PL) and scintillati...
Aya Torimoto, Hirokazu Masai, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida, Takahiro Ohkubo
Journal of Luminescence   197 98-103   May 2018
© 2018 Elsevier B.V. Although there are many reports investigating emission properties of Ce3+centers, there is little report on the quantitative Ce3+/(Ce3++Ce4+) ratio, which is one of the most fundamental factors for designing phosphors. In this...
Yuya Isokawa, Shotaro Hirano, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Non-Crystalline Solids   487 1-6   May 2018
© 2018 Elsevier B.V. In this study, we developed Li3PO4-B2O3glasses doped with different concentrations (0, 0.1, 0.2, 0.5, and 1.0%) of Ce and studied the optical, dosimetric and scintillation properties. The Ce-doped samples showed scintillation ...
Hiromi Kimura, Fumiya Nakamura, Takumi Kato, Daisuke Nakauchi, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Materials Science: Materials in Electronics   29 8498-8503   May 2018
© 2018, Springer Science+Business Media, LLC, part of Springer Nature. We have developed CsBr transparent ceramics doped with various concentrations of Tl (0.01, 0.1, 0.2, 0.3 and 0.5 mol%) by spark plasma sintering and then investigated for scint...
Masaki Akatsuka, Yuki Usui, Daisuke Nakauchi, Takumi Kato, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Optical Materials   79 428-434   May 2018
© 2018 Elsevier B.V. YAlO3(YAP) single crystals doped with Lu and Nd were grown by the Floating Zone (FZ) method to evaluate their scintillation properties particularly emissions in the near-infrared (NIR) range. The Nd concentration was fixed to ...
Yasuki Yoshida, Kenji Shinozaki, Takuya Igashira, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Solid State Sciences   78 1-6   Apr 2018
© 2018 Elsevier Masson SAS Yb3Al5O12(YbAG) single crystals doped with different concentrations of Pr were synthesized by the Floating Zone (FZ) method. Then, we evaluated their basic optical and scintillation properties. All the samples showed pho...
Yuya Isokawa, Shotaro Hirano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Radiation Measurements   111 13-18   Apr 2018
© 2018 Elsevier Ltd We synthesized lithium borosilicate glasses doped with different concentrations of Ce (0.01%, 0.03%, 0.10%, and 0.30%) as well as undoped glass, and then the prepared glasses were studied for their optical, dosimetric, and scin...
Taiki Ogawa, Daisuke Nakauchi, Go Okada, Naoki Kawano, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Luminescence   196 270-274   Apr 2018
© 2017 Elsevier B.V. Undoped and Ce-doped Ca2Al2SiO7single crystals with different Ce concentrations were prepared by the floating zone method. From the X-ray diffraction patterns, we confirmed that all the grown crystals have no impurity phases. ...
Yuki Usui, Go Okada, Noriaki Kawaguchi, Hirokazu Masai, Takayuki Yanagida
Japanese Journal of Applied Physics   57    Apr 2018
© 2018 The Japan Society of Applied Physics. 13TiO2-xZnO-17Al2O3-(70 % x)B2O3(x = 17, 26, and 35) glasses were prepared by a melt-quenching method, and the obtained glass samples were heated at temperatures 30 °C above the glass transition tempera...
Hiromi Kimura, Fumiya Nakamura, Takumi Kato, Daisuke Nakauchi, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Optik   157 421-428   Mar 2018
© 2017 Elsevier GmbH We have synthesized Eu-doped CsBr transparent ceramics by spark plasma sintering (SPS) and a single crystal by the vertical Bridgman-Stockbarger method. Subsequently, we have investigated their optical, scintillation and dosim...
Hirokazu Masai, Kenji Shinozaki, Go Okada, Noriaki Kawaguchi, Toshiaki Ina, Takayuki Yanagida
Journal of Luminescence   195 413-419   Mar 2018
© 2017 Elsevier B.V. Control of activators in solid state matter is the most important focus for phosphor applications. However, melt-quenching from an inert atmosphere is restricted by the constraints of a purged electric furnace. Here, we have e...
Hiromi Kimura, Fumiya Nakamura, Takumi Kato, Daisuke Nakauchi, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Journal of the Ceramic Society of Japan   126 184-189   Mar 2018
© 2018 The Ceramic Society of Japan. All rights reserved. We synthesized bulk CsBr samples in a transparent ceramic form by spark plasma sintering (SPS) and in a single crystal form by the vertical Bridgman-Stockbarger method, and investigated the...
Masanori Koshimizu, Keiichiro Saeki, Yutaka Fujimoto, Go Okada, Takayuki Yanagida, Shinichi Yamashita, Keisuke Asai
Japanese Journal of Applied Physics   57    Mar 2018
© 2018 The Japan Society of Applied Physics. The temperature dependence of the scintillation intensity of Cs2HfCl6was measured and found to increase monotonically from 10 to 300 K, whereas no significant dependence on temperature was observed for ...
Keiichiro Saeki, Yutaka Fujimoto, Masanori Koshimizu, Daisuke Nakauchi, Hironori Tanaka, Takayuki Yanagida, Keisuke Asai
Japanese Journal of Applied Physics   57    Mar 2018
© 2018 The Japan Society of Applied Physics. Luminescence and scintillation properties of Cs2HfBr6and Cs2ZrBr6crystals were investigated using photoluminescence (PL) and radioluminescence (RL) spectroscopies. In the PL spectra, emission bands were...
Naoki Kawano, Noriaki Kawaguchi, Go Okada, Yutaka Fujimoto, Takayuki Yanagida
Journal of Non-Crystalline Solids   482 154-159   Feb 2018
© 2017 Elsevier B.V. Strontium aluminoborate glasses with different concentrations of Ce (0, 0.01, 0.05, 0.1 and 0.5 mol%) were synthesized by the conventional melt-quenching technique. After the synthesis, photoluminescence (PL), scintillation an...
Narumi Kumamoto, Daisuke Nakauchi, Takumi Kato, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Japanese Journal of Applied Physics   57    Feb 2018
© 2018 The Japan Society of Applied Physics. We have synthesized Dy-doped 12CaO 7Al2O3(Dy:C12A7) single crystals with various Dy concentrations by the floating zone (FZ) method and investigated the photoluminescence (PL) and X-ray induced radiolum...
Fumiya Nakamura, Takumi Kato, Go Okada, Naoki Kawano, Noriaki Kawaguchi, Kentaro Fukuda, Takayuki Yanagida
Materials Research Bulletin   98 83-88   Feb 2018
© 2017 Elsevier Ltd In this study, we have developed MgF2:Gd transparent ceramics by spark plasma sintering (SPS) and evaluated the scintillation, dosimeter and optical properties. All the sample were successfully synthesized in a transparent form...
Daisuke Nakauchi, Go Okada, Naoki Kawano, Noriaki Kawaguchi, Takayuki Yanagida
Japanese Journal of Applied Physics   57    Feb 2018
© 2018 The Japan Society of Applied Physics. Bulk single crystals of Ce-doped Tb3GaxAl5-xO12(x = 0-4) were successfully synthesized by the floating zone method. The samples exhibit photoluminescence and scintillation with an intense broad emission...
Daisuke Nakauchi, Go Okada, Masanori Koshimizu, Noriaki Kawaguchi, Takayuki Yanagida
Physica B: Condensed Matter   530 38-42   Feb 2018
© 2017 Elsevier B.V. We investigated the photoluminescence (PL), radioluminescence (RL) and thermally-stimulated luminescence (TSL) properties of Pr:CaSiO3crystals grown by the floating zone method. In both the PL and RL spectra, a broad emission ...
Nurul Athirah Noor Azman, Takumi Kato, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Japanese Journal of Applied Physics   57    Feb 2018
© 2018 The Japan Society of Applied Physics. A series of alumina (Al2O3) ceramics doped with different concentrations of scandium (Sc) were synthesized by using spark plasma sintering (SPS) for characterizing luminescence properties. Two emission ...
Naoki Kawano, Masanori Koshimizu, Go Okada, Yutaka Fujimoto, Noriaki Kawaguchi, Takayuki Yanagida, Keisuke Asai
Japanese Journal of Applied Physics   57    Feb 2018
© 2018 The Japan Society of Applied Physics. We investigated the luminescence properties of organic-inorganic layered perovskite-type compounds under vacuum ultraviolet irradiation. A crystal of (C6H5C2H4NH3)2PbBr4was fabricated by the poor-solven...
Hayata Samizo, Takumi Kato, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Materials Science: Materials in Electronics   29 1985-1991   Feb 2018
© 2017, Springer Science+Business Media, LLC. In this study, we have synthesized Sr(PO3)2glasses non-doped and doped with Ce (0.01, 0.05, 0.1, 1.0 and 3.0 mol%) prepared by the conventional melt-quenching method and investigated the optical proper...
Noriaki Kawaguchi, Daisuke Nakauchi, Shotaro Hirano, Naoki Kawano, Go Okada, Kentaro Fukuda, Takayuki Yanagida
Japanese Journal of Applied Physics   57    Feb 2018
© 2018 The Japan Society of Applied Physics. We have investigated the scintillation and dosimetric properties of Tb-doped LiCaAlF6single crystals. The X-ray-induced emission spectrum consisted of several sharp peaks due to the 4f-4f transitions of...
Takuya Igashira, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Optik   155 36-42   Feb 2018
© 2017 Elsevier GmbH Ce-doped Sr2Y8(SiO4)6O2, Sr2Gd8(SiO4)6O2and Sr2Lu8(SiO4)6O2(SrYS, SrGS and SrLuS, respectively) apatite crystals were grown by the Floating Zone method, and their optical and radioluminescence (RL) properties were characterize...
Yuya Isokawa, Shotaro Hirano, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Optical Materials   76 28-33   Feb 2018
© 2017 Elsevier B.V. In this study, we developed Li3PO4-B2O3glasses doped with different concentrations of Tb (0.1, 0.3, 1.0, 3.0, and 10.0%) as well as undoped glass, and then the prepared glasses were studied for the optical, dosimeter and scint...
Fumiya Nakamura, Takumi Kato, Go Okada, Naoki Kawano, Noriaki Kawaguchi, Takayuki Yanagida
Materials Letters   211 100-102   Jan 2018
© 2017 Elsevier B.V. In this letter, we report a discovery of a new radio-photoluminescence (RPL) material. The RPL appeared in vacuum-sintered non-doped K2CO3ceramics as an evolution of PL emission band peaking at 440 nm. The RPL signal was confi...
Takumi Sakai, Masanori Koshimizu, Yutaka Fujimoto, Daisuke Nakauchi, Takayuki Yanagida, Keisuke Asai
Sensors and Materials   30 1564-1575   Jan 2018
© MYU K.K. The optical and scintillation properties of undoped, Sb-doped, and Tl-doped Cs2CdCl4single crystals were investigated. We chose Sb3+and Tl+ as the dopants of (ns)2-type electronic configurations. In the photoluminescence and scintillati...
Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Optical Materials      Jan 2018
© 2018 Elsevier B.V. Ce-doped MgO-CaO-SiO2ceramics show notable storage luminescence properties as thermally-stimulated luminescence (TSL) and optically-stimulated luminescence (OSL). The origin of luminescence for both TSL and OSL is due to the 5...
Kei Kagami, Yutaka Fujimoto, Masanori Koshimizu, Daisuke Nakauchi, Takayuki Yanagida, Keisuke Asai
Optical Materials      Jan 2018
© 2018 Elsevier B.V. The photoluminescence (PL) and radiation response properties of CeCl3-doped 2CsPO3-Al(PO3)3were analyzed. Glasses doped with different concentrations of CeCl3were prepared according to the conventional melt quenching method un...
Shota Asada, Go Okada, Takumi Kato, Fumiya Nakamura, Naoki Kawano, Noriaki Kawaguchi, Takayuki Yanagida
Chemistry Letters   47 59-61   Jan 2018
© 2018 The Chemical Society of Japan. Eu-doped Ca2SiO4ceramics have been newly found to show radio-photoluminescence (RPL). An as-prepared material shows photoluminescence (PL) only due to Eu3+whereas an additional broad emission due to Eu2+appear...
Fumiyuki Hiyama, Takio Noguchi, Masanori Koshimizu, Shunji Kishimoto, Rie Haruki, Fumihiko Nishikido, Takayuki Yanagida, Yutaka Fujimoto, Tsutomu Aida, Seiichi Takami, Tadafumi Adschiri, Tadafumi Adschiri, Tadafumi Adschiri, Keisuke Asai
Japanese Journal of Applied Physics   57    Jan 2018
© 2018 The Japan Society of Applied Physics. We synthesized plastic scintillators incorporated with HfO2nanoparticles as detectors for X-ray synchrotron radiation. Nanoparticles with sizes of less than 10 nm were synthesized with the subcritical h...
Yutaka Fujimoto, Keiichiro Saeki, Daisuke Nakauchi, Takayuki Yanagida, Masanori Koshimizu, Keisuke Asai
Sensors and Materials   30 1577-1583   Jan 2018
© MYU K.K. We report on the photoluminescence and scintillation characterizations of new Tl2HfCl6and Tl2ZrCl6crystalline scintillators grown by the vertical Bridgman-Stockbarger method. Both Tl2HfCl6and Tl2ZrCl6crystals showed an intrinsic emissio...
Naoki Kawano, Noriaki Kawaguchi, Go Okada, Yutaka Fujimoto, Takayuki Yanagida
Sensors and Materials   30 1539-1546   Jan 2018
© MYU K.K. We investigated the photoluminescence (PL), scintillation, and dosimetric properties of strontium aluminoborate glasses with different thulium (Tm) concentrations of 0.1, 0.5, 1.0, and 5.0%. The Tm-doped glasses were synthesized by the ...
Go Okada, Kenji Shinozaki, Daiki Shiratori, Noriaki Kawaguchi, Takayuki Yanagida
Ceramics International      Jan 2018
© 2018 Elsevier Ltd and Techna Group S.r.l. Radio-photoluminescence (RPL), which is an infrequent phenomenon observed in phosphor materials where new luminescent centre is generated by interacting with ionizing radiation, was observed in Eu-doped ...
Go Okada, Fumiya Nakamura, Naoki Kawano, Noriaki Kawaguchi, Safa Kasap, Takayuki Yanagida
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms      Jan 2018
© 2018 Elsevier B.V. We have prepared Sm:MgF2ceramics by the spark plasma sintering technique and studied the radio-photoluminescence (RPL) properties. RPL is a phenomenon seen in selected phosphors in which a new photoluminescence (PL) emission c...
Go Okada, Masaki Akatsuka, Hiromi Kimura, Masaki Mori, Masaki Mori, Naoki Kawano, Noriaki Kawaguchi, Takayuki Yanagida
Sensors and Materials   30 1547-1554   Jan 2018
© MYU K.K. Ce-doped Y4Al2O9(YAM) crystals were grown by the floating zone method, and several different characterizations were conducted for scintillator applications. Both photoluminescence (PL) and scintillation show emissions predominantly due ...
Sayaka Noda, Yutaka Fujimoto, Masanori Koshimizu, Go Okada, Takayuki Yanagida, Keisuke Asai
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms      Jan 2018
© 2017 Elsevier B.V. The electron and hole trap states of undoped, Eu-doped, and Ce-doped CsCaCl3were analyzed using the absorption spectra and the TSL glow curves after the optical bleaching. The trap depths were estimated using the initial rise ...
Takumi Kato, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Masanori Koshimizu, Takayuki Yanagida
Optical Materials      Jan 2018
© 2018 Elsevier B.V. We have investigated scintillation and photoluminescence (PL) properties of Sr2CeO4ceramics. The ceramic samples were synthesized by the solid state reaction method sintered at different temperatures (1100, 1200, 1300 and 1400...
Masanori Koshimizu, Takayuki Yanagida, Kiyomitsu Shinsho, Shin Yanagisawa, Yutaka Fujimoto, Hideki Yagi, Takagimi Yanagitani, Keisuke Asai
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms      Jan 2018
© 2018 Elsevier B.V. We have compared the trap states of electrons and holes responsible for the thermoluminescence of Y3Al5O12(YAG):Ce crystals and ceramics after X-ray or UV irradiation. In the case of X-rays, electrons and holes are trapped at ...
Go Okada, Kenji Shinozaki, Takayuki Komatsu, Naoki Kawano, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Non-Crystalline Solids      Jan 2018
© 2018 Elsevier B.V. Tb3+-doped BaF2-Al2O3-B2O3glass and glass-ceramic were synthesized, and the luminescence properties were investigated for potential applications in radiation measurements. The glass-ceramic can be obtained by heat-treating the...
Narumi Kumamoto, Takumi Kato, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms      Jan 2018
© 2018 Elsevier B.V. We have synthesized 0.001, 0.01 and 0.1% Ca-doped MgO transparent ceramics by the Spark Plasma Sintering (SPS) method, and then we investigated the optical, scintillation and dosimeter properties. In scintillation spectra, som...
Hiromi Kimura, Fumiya Nakamura, Takumi Kato, Daisuke Nakauchi, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Sensors and Materials   30 1555-1563   Jan 2018
© MYU K.K. Ce:CsCl transparent ceramics doped with different concentrations of Ce (0.01, 0.1, and 1 mol.%) were synthesized by spark plasma sintering, and their optical, scintillation and dosimetric properties were investigated. Regarding the scin...
Noriaki Kawaguchi, Hiromi Kimura, Masaki Akatsuka, Go Okada, Naoki Kawano, Kentaro Fukuda, Takayuki Yanagida
Sensors and Materials   30 1585-1590   Jan 2018
© MYU K.K. The scintillation properties of Pr:CaF2were studied in comparison with those of Eu:CaF2under α-ray excitation using a sealed source of241Am. The relative light yields of the Pr:CaF2crystals were approximately 0.6-13% of the Eu:CaF2cryst...
Takayuki Yanagida
Proceedings of the Japan Academy Series B: Physical and Biological Sciences   94 75-97   Jan 2018
© 2018 The Japan Academy. Scintillation materials and detectors that are used in many applications, such as medical imaging, security, oil-logging, high energy physics and non-destructive inspection, are reviewed. The fundamental physics understoo...
Masaki Akatsuka, Yuki Usui, Daisuke Nakauchi, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Sensors and Materials   30 1525-1532   Jan 2018
© MYU K.K. (Lu,Y)AlO3crystals doped with different concentrations of Nd were synthesized by the floating-zone (FZ) method to evaluate their scintillation properties, particularly in the nearinfrared (NIR) range. Under X-ray irradiation, scintillat...
Takumi Kato, Go Okada, Noriaki Kawaguchi, Hirokazu Masai, Takayuki Yanagida
Journal of Non-Crystalline Solids      Jan 2018
© 2018 Elsevier B.V. We have investigated photoluminescence (PL) and scintillation properties of 30BaO-15TiO2-(55-x)GeO2-xSiO2(BTGSx: x = 0, 13.75, 25, 30, 41.25 and 55) glasses and glass-ceramics prepared by the conventional melt-quenching method...
Daisuke Nakauchi, Go Okada, Koshimizu Masanori, Naoki Kawano, Noriaki Kawaguchi, Takayuki Yanagida
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms      Jan 2018
© 2018 Elsevier B.V. Eu-doped SrAl12O19, SrAl4O7, Sr4Al14O25and SrAl2O4bulk crystals were successfully synthesized by the floating zone method. The samples exhibit photoluminescence and scintillation with an intense broad emission due to the 5d-4f...
Daisuke Nakauchi, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Optical Materials      Jan 2018
© 2018 Elsevier B.V. Eu-doped BaxSr1-xAl2O4(x = 0, 0.1, 0.3 and 0.5) single crystals were synthesized by the floating zone method and then characterized for scintillation applications. All the crystal samples exhibit photoluminescence and scintill...
Takuya Igashira, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Materials Science: Materials in Electronics   28 18630-18636   Dec 2017
© 2017, Springer Science+Business Media, LLC. We synthesized Sr2Gd8(SiO4)6O2apatite single crystals with different Ce concentrations by the Floating Zone (FZ) method and evaluated the optical and scintillation properties. We confirmed photolumines...
Takumi Kato, Naoki Kawano, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Radiation Measurements   107 43-47   Dec 2017
© 2017 We have synthesized the Al2O3transparent ceramic by using spark plasma sintering (SPS) and investigated the dosimeter and scintillation properties for X-ray detections, in comparison with the single crystal. Under X-ray irradiation, emissio...
Naoki Kawano, Masanori Koshimizu, Go Okada, Yutaka Fujimoto, Noriaki Kawaguchi, Takayuki Yanagida, Keisuke Asai
Scientific Reports   7    Dec 2017
© 2017 The Author(s). We investigated scintillation properties of organic-inorganic layered perovskite-Type compounds under gamma-ray and X-ray irradiation. A crystal of the hybrid compounds with phenethyl amine (17 × 23 × 4 mm) was successfully f...
Takumi Kato, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Luminescence   192 316-320   Dec 2017
© 2017 We have investigated thermally-stimulated luminescence (TSL) and photo-stimulated luminescence (PSL) properties of MgO transparent ceramic doped with different concentrations of Ce ion (0.001%, 0.01% and 0.1%), together with the photolumine...
Shunichi Kaneko, Hirokazu Masai, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Asian Ceramic Societies   5 385-390   Dec 2017
© 2017 The Ceramic Society of Japan and the Korean Ceramic Society Photoluminescence (PL) and radioluminescence properties of Pr-doped lanthanum aluminoborate glasses with the composition xPr-20La2O3-30Al2O3-50B2O3(0 ≤ x ≤ 1.0) were studied. In th...
Fumiya Nakamura, Takumi Kato, Go Okada, Noriaki Kawaguchi, Kentaro Fukuda, Takayuki Yanagida
Journal of the European Ceramic Society   37 4919-4924   Dec 2017
© 2017 Elsevier Ltd We have developed CaF2:Nd transparent ceramics with varying doping concentrations of Nd by spark plasma sintering (SPS) and evaluated the optical, scintillation and dosimeter properties. The samples showed effective absorption ...
Takayuki Yanagida, Masanori Koshimizu, Naoki Kawano, Go Okada, Noriaki Kawaguchi
Materials Research Bulletin   95 409-413   Nov 2017
© 2017 Elsevier Ltd The undoped ScAlMgO4crystal was synthesized by the Floating Zone (FZ) method, and we evaluated the optical and scintillation properties. The transmittance spectrum showed the absorption edge around 200 nm. VUV-excited emission/...
Daisuke Nakauchi, Go Okada, Masanori Koshimizu, Takayuki Yanagida
Radiation Measurements   106 170-174   Nov 2017
© 2017 Elsevier Ltd SrAl2O4single crystals with different concentrations of Pr (0.5–5%) were grown by the floating zone method. Both the photoluminescence and scintillation spectra consist of a broad emission band around 300 nm and several sharp e...
Takayuki Yanagida, Masanori Koshimizu, Yutaka Fujimoto, Kentaro Fukuda, Kenichi Watanabe, Go Okada, Noriaki Kawaguchi
Journal of Luminescence   191 22-27   Nov 2017
© 2017 Elsevier B.V. Very low amount of Eu and alkali metal (Na, K, Rb and Cs) co-doped LiCaAlF6crystal scintillators were prepared by using the micro-pulling down method to investigate the origin of the light yield enhancement and the fast lumine...
Yuho Hirata, Kenichi Watanabe, Akira Uritani, Atsushi Yamazaki, Yusuke Koba, Naruhiro Matsufuji, Takayuki Yanagida, Kentaro Fukuda
Radiation Measurements   106 246-251   Nov 2017
© 2017 Elsevier Ltd To accurately estimate an actual dose during radiotherapy treatment, dosimeters are required to be inserted into the affected region in a patient's body. Therefore, we are developing a small size dosimeter consisting of optical...
Aya Torimoto, Hirokazu Masai, Go Okada, Takayuki Yanagida
Radiation Measurements   106 175-179   Nov 2017
© 2017 Elsevier Ltd Photo- and X-ray induced luminescence properties of Sn2+-doped zinc phosphate glasses with different chemical compositions were investigated. Decay constants of the glasses decrease with increasing the ZnO amount, which are ind...
Aya Torimoto, Hirokazu Masai, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Optical Materials   73 517-522   Nov 2017
© 2017 Elsevier B.V. We investigate the photoluminescence (PL) and X-ray-induced luminescence properties of 0.1 mol% Ce-doped MO-B2O3(M = Ca, Sr, and Ba) glasses. We also determine the Ce3+/(Ce3++Ce4+) ratio by X-ray absorption near-edge structure...
Kei Watanabe, Masanori Koshimizu, Yutaka Fujimoto, Yamato Hayashi, Hirotsugu Takizawa, Takayuki Yanagida, Keisuke Asai
Radiation Measurements   106 146-150   Nov 2017
© 2016 Elsevier Ltd We synthesized ZnO ceramics scintillators without or with dopants using a high-pressure synthesis method. The dense ceramics were successfully obtained, and the densified structure was confirmed by SEM observation. Doping with ...
Takayuki Yanagida, Go Okada, Kentaro Fukuda, Kenichi Watanabe, Noriaki Kawaguchi
Radiation Measurements   106 124-128   Nov 2017
© 2016 Elsevier Ltd Photoluminescence, scintillation, optically-stimulated luminescence (OSL), and thermally-stimulated luminescence (TSL) properties of Ce 0.5% and Eu 0.5% doped LiSrAlF6crystals fabricated by Tokuyama Corp. were investigated. In ...
Go Okada, Yutaka Fujimoto, Hironori Tanaka, Safa Kasap, Takayuki Yanagida
Journal of Materials Science: Materials in Electronics   28 15980-15986   Nov 2017
© 2017, Springer Science+Business Media, LLC. Sm-doped KBr single crystals were prepared by the Bridgman–Stockbarger technique. The samples show both radio-photoluminescence (RPL) and thermally-stimulated luminescence (TSL). The RPL is due to the ...
Naoki Kawano, Takumi Kato, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Optical Materials   73 364-370   Nov 2017
© 2017 Elsevier B.V. MgO translucent ceramics doped with different concentrations of Tb (0.01, 0.05, 0.1, 0.5%) were prepared by the Spark Plasma Sintering (SPS) method. Further, the optical, scintillation, dosimeter properties of were evaluated s...
Go Okada, Kentaro Fukuda, Noriaki Kawaguchi, Takayuki Yanagida
Radiation Measurements   106 134-139   Nov 2017
© 2017 Elsevier Ltd We have synthesized Eu-doped LiCaAlF6ceramics by using a spark plasma sintering (SPS) technique and then characterized for neutron scintillator applications. Despite the difficulties to fabricate fluoride compounds in a ceramic...
Go Okada, Kenji Shinozaki, Kenji Shinozaki, Takayuki Komatsu, Safa Kasap, Takayuki Yanagida
Radiation Measurements   106 73-78   Nov 2017
© 2016 Elsevier Ltd In this research we have found that Sm-doped BaF2-Al2O3-B2O3glass ceramics show radio-photoluminescence (RPL) properties associated with X-ray irradiation. Before X-ray irradiation, the photoluminescence (PL) emission is only d...
D. Nakauchi, M. Koshimizu, G. Okada, T. Yanagida
Radiation Measurements   106 129-133   Nov 2017
© 2017 Elsevier Ltd Undoped and Ce-doped GdTaO4single crystals with different Ce concentration were grown by the floating zone method. By X-ray diffraction analysis, we confirmed all the grown crystals do not have any impurity phases. In X-ray ind...
Takumi Kato, Go Okada, Kentaro Fukuda, Takayuki Yanagida
Radiation Measurements   106 140-145   Nov 2017
© 2017 Elsevier Ltd We have developed BaF2transparent ceramics by using a spark plasma sintering (SPS), and investigated optical, scintillation and dosimeter properties, in comparison with a BaF2single crystal. The photoluminescence emission peak ...
Takumi Kato, Go Okada, Takayuki Yanagida
Radiation Measurements   106 84-88   Nov 2017
© 2017 Elsevier Ltd We have prepared Y-doped (0.001, 0.01 and 0.1%) MgO samples by using a Spark Plasma Sintering (SPS) method. Subsequently, photoluminescence (PL), scintillation and thermally-stimulated luminescence (TSL) dosimetric properties w...
H. Tanaka, Y. Fujimoto, K. Saeki, M. Koshimizu, T. Yanagida, K. Asai
Radiation Measurements   106 180-186   Nov 2017
© 2017 Elsevier Ltd Ag-doped phosphate glasses have conventionally been used as materials for passive dosimeters. However, there are unsolved problems, such as the build-up process, and the influence of the composition of the phosphate glasses. It...
Takuya Igashira, Masaki Mori, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Rare Earths   35 1071-1076   Nov 2017
© 2017 Chinese Society of Rare Earths (Gd8Ca2)(SiO4)6O2apatite crystals doped with different concentrations of Ce were synthesized by the Floating Zone (FZ) method, and we have evaluated the photoluminescence (PL) and radioluminescence (RL) proper...
Aya Torimoto, Hirokazu Masai, Hirokazu Masai, Go Okada, Takayuki Yanagida
Radiation Measurements   106 46-51   Nov 2017
© 2017 Elsevier Ltd Photoluminescence (PL) and X-ray-induced luminescence properties of Ce3+-doped barium borate glasses with different cerium concentrations (from 0 to 1.0 mol%) were investigated. Emission intensities in PL and storage luminescen...
Yutaka Fujimoto, Keiichiro Saeki, Takayuki Yanagida, Masanori Koshimizu, Keisuke Asai
Radiation Measurements   106 151-154   Nov 2017
© 2017 Elsevier Ltd We report the photoluminescence and the scintillation properties of a newly developed thallium cadmium chloride (TlCdCl3) crystal. This crystal will provide excellent detection efficiency for X- and γ-rays due to its high effec...
Daisuke Nakauchi, Masanori Koshimizu, Go Okada, Yusuke Koba, Kentaro Fukuda, Yutaka Fujimoto, Noriaki Kawaguchi, Keisuke Asai, Takayuki Yanagida
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms   409 23-26   Oct 2017
© 2017 Elsevier B.V. We have investigated thermally-stimulated luminescence (TSL) properties of Ce-doped LiCaAlF6crystals irradiated with ionizing radiations of different linear energy transfers (LET) – X-rays and He ion beams. It was found that t...
Takayuki Yanagida, Masanori Koshimizu, Yutaka Fujimoto, Satoshi Kurashima, Kazuhiro Iwamatsu, Atsushi Kimura, Mitsumasa Taguchi, Go Okada, Noriaki Kawaguchi
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms   409 27-30   Oct 2017
© 2017 Elsevier B.V. We analyzed the effects of the excitation density or linear energy transfer (LET) on the scintillation temporal profiles of Gd2SiO5(GSO):Ce by using pulsed ion beams of 20 MeV H+, 50 MeV He2+, and 220 MeV C5+. The rise was fas...
Masanori Koshimizu, Satoshi Kurashima, Atsushi Kimura, Mitsumasa Taguchi, Takayuki Yanagida, Yutaka Fujimoto, Keisuke Asai
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms   409 19-22   Oct 2017
© 2017 Elsevier B.V. We analyzed the linear energy transfer (LET; energy deposited onto the target per unit length) effects on the scintillation properties of Bi4Ge3O12(BGO) with an emphasis on the dynamical aspect. We irradiated BGO with 20 MeV H...
Yusuke Inoue, Sotaro Muramatsu, Fumihiro Itoigawa, Shingo Ono, Masaaki Sudo, Kentaro Fukuda, Takayuki Yanagida
Journal of Applied Physics   122    Oct 2017
© 2017 Author(s). We have fabricated Eu2+:LiCaAlF6(Eu:LiCAF) nanoparticles via a dry pulsed laser ablation process using femtosecond laser pulses. The particle size was controlled by adjusting the laser fluence. The crystallographic orientation an...
Narumi Kumamoto, Daisuke Nakauchi, Takumi Kato, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Rare Earths   35 957-963   Oct 2017
© 2017 The Chinese Society of Rare Earths Tb-doped 12CaO·7Al2O3(Tb:C12A7) crystals were synthesized by the floating zone (FZ) method and the photoluminescence (PL), scintillation and thermally-stimulated luminescence (TSL) properties were investig...
Yutaka Fujimoto, Takayuki Yanagida, Masanori Koshimizu, Keisuke Asai
Journal of the Ceramic Society of Japan   125 728-731   Oct 2017
© 2017 The Ceramic Society of Japan. All rights reserved. In this study, we report on the optical and thermolumienscence (TL) properties of newly developed (301x)Li2O20Al2O350B2O32xCeO2(values are in mol %) glass dosimeters prepared by a conventio...
Fumiya Nakamura, Takumi Kato, Go Okada, Noriaki Kawaguchi, Kentaro Fukuda, Takayuki Yanagida
Optical Materials   72 470-475   Oct 2017
© 2017 In this paper, we report basic optical properties and scintillation and storage luminescence properties of MgF2:Ce transparent ceramics with different doping concentrations of Ce (0.01, 0.1 and 1%) synthesized by spark plasma sintering (SPS...
Daisuke Nakauchi, Go Okada, Yutaka Fujimoto, Naoki Kawano, Noriaki Kawaguchi, Takayuki Yanagida
Optical Materials   72 190-194   Oct 2017
© 2017 Elsevier B.V. Optical, radioluminescence (RL) and thermoluminescence (TL) properties of magnesium aluminoborate glasses were evaluated. The samples were synthesized by the conventional melt-quenching technique using an alumina crucible unde...

Misc

 
Akihiro Yamaji, Yuui Yokota, Yutaka Fujimoto, Akira Yoshikawa, Akira Yoshikawa, Takayuki Yanagida, Noriaki Kawaguchi, Noriaki Kawaguchi, Kenichi Watanabe, Atsushi Yamazaki
Proceedings of the 25th Workshop on Radiation Detectors and Their Uses   90-99   Dec 2011
Mirai Ieda, Tatsuya Ishimaru, Shingo Ono, Noriaki Kawaguchi, Kentaro Fukuda, Toshihisa Suyama, Yuui Yokota, Takayuki Yanagida, Akira Yoshikawa
2011 Int. Quantum Electron. Conf., IQEC 2011 and Conf. Lasers and Electro-Optics, CLEO Pacific Rim 2011 Incorporating the Australasian Conf. Optics, Lasers and Spectroscopy and the Australian Conf.   1225-1226   Dec 2011
We report on photoconductive detector based on NdF 3 thin films in vacuum ultraviolet region. NdF 3 thin films were grown by pulse laser deposition controlling substrate temperature from R.T. to 870 K. NdF 3 thin film grown at 670 K exhibited the ...
Makoto Sugiyama, Yuui Yokota, Yutaka Fujimoto, Akira Yoshikawa, Takayuki Yanagida, Akihiko Ito, Liqiong An, Takashi Goto
Proceedings of the 25th Workshop on Radiation Detectors and Their Uses   68-75   Dec 2011
Yutaka Fujimoto, Yuui Yokota, Akira Yoshikawa, Akira Yoshikawa, Takayuki Yanagida, Noriaki Kawaguchi, Kentaro Fukuda, Daisuke Totsuka, Kenichi Watanabe, Atsushi Yamazaki
Proceedings of the 25th Workshop on Radiation Detectors and Their Uses   116-125   Dec 2011
Hirokazu Masai, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Optical Materials   88 1-6   Feb 2019
© 2018 Elsevier B.V. A high conversion efficiency is a key factor for phosphor applications. Because the number of studies on the 5d–4f emissions of Pr3+ in oxide glasses has been limited, it is worth examining the relationship between the lumines...
Yuui Yokota, Akira Yoshikawa, Yoshisuke Futami, Masato Sato, Kzushige Tota, Ko Onodera, Takayuki Yanagida
2011 International Symposium on Applications of Ferroelectrics and 2011 International Symposium on Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials, ISAF/PFM 2011      Oct 2011
We have grown the shape-controlled langasite-type crystals by the μ-PD method. Columnar-shaped La3Ta0.5Ga5.5O 14 (LTG), Ca3NbGa3Si2O14 (CNGS), Ca3TaGa3Si2O14 (CTGS), Sr3NbGa3Si2O14 (SNGS) and Sr 3TaGa3Si2O14 (STGS) crystals were grown using the Pt...
Takayuki Yanagida, Hiroyuki Fukushima, Go Okada, Noriaki Kawaguchi
Physica B: Condensed Matter   550 21-25   Dec 2018
© 2018 Elsevier B.V. Eu:BaFBr is typically used in a ceramic form for imaging plate, and it has not been commonly studied in a single crystal form and for scintillator applications. In this study, we prepared Eu:BaFBr single crystal by the Bridgem...
Yuui Yokota, Akira Yoshikawa, Yoshisuke Futami, Masato Sato, Kzushige Tota, Ko Onodera, Takayuki Yanagida
2011 International Symposium on Applications of Ferroelectrics and 2011 International Symposium on Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials, ISAF/PFM 2011      Oct 2011
We have grown the shape-controlled Sr3NbGa3Si 2O14 (SNGS) and Sr3TaGa3Si 2O14 (STGS) langasite-type crystals by the μ-PD method. Columnar-shaped SNGS and STGS crystals were grown using the Pt-Rh crucible with a columnar die in 3 mm diameter. Grown...
Hiroyuki Fukushima, Daisuke Nakauchi, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Materials Science: Materials in Electronics   29 21033-21039   Dec 2018
© 2018, Springer Science+Business Media, LLC, part of Springer Nature. Ce-doped CaHfO3 crystals were synthesized by the floating zone method, and the photoluminescence and scintillation properties were evaluated. The crystals exhibit photoluminesc...
Joanna Iwanowska, Lukasz Swiderski, Marek Moszynski, Takayuki Yanagida, Yuui Yokota, Akira Yoshikawa, Kentaro Fukuda, Noriaki Kawaguchi, Sumito Ishizu
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   652 319-322   Oct 2011
Cerium-doped LiCaAlF6(Ce:LiCAF) crystals have been studied as scintillators in application to thermal neutron detection. Three crystals: high-doping Ce:LiCAF, low-doping Ce:LiCAF with 50% enrichment of6Li (both 10 mm×10 mm×2 mm, rectangular) and h...
Keisuke Takahashi, Masanori Koshimizu, Yutaka Fujimoto, Takayuki Yanagida, Keisuke Asai
Journal of the Ceramic Society of Japan   126 755-760   Oct 2018
©2018 The Ceramic Society of Japan. Fast scintillation materials based on ternary halide mixed crystals, Rb11xCsxCaCl3 were synthesized. Broad luminescence bands were observed around 360 nm and can be ascribed to Auger-free Luminescence (AFL) for ...
Yutaka Fujimoto, Yutaka Fujimoto, Takayuki Yanagida, Yuui Yokota, Noriaki Kawaguchi, Kentaro Fukuda, Kentaro Fukuda, Daisuke Totsuka, Kenichi Watanabe, Atsushi Yamazaki, Valery Chani, Akira Yoshikawa, Akira Yoshikawa
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   652 238-241   Oct 2011
This communication reports optical properties and radiation responses of Pb20.5 and 1.0 mol%-doped YCa4O(BO3)3(YCOB) single crystals grown by the micro-pulling-down (μ-PD) method for neutron scintillator applications. The crystals had no impurity ...
Takayuki Yanagida, Kenichi Watanabe, Go Okada, Noriaki Kawaguchi
Japanese Journal of Applied Physics   57    Oct 2018
© 2018 The Japan Society of Applied Physics. A series of Pr-doped pyrosilicate crystals, Y2Si2O7 (YPS), Pr2Si2O7 (PrPS), Gd2Si2O7 (GPS), and Lu2Si2O7 (LPS), were synthesized by the floating zone (FZ) method to investigate whether the positive hyst...
Naoki Kawano, Daisuke Nakauchi, Kentaro Fukuda, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Japanese Journal of Applied Physics   57    Oct 2018
© 2018 The Japan Society of Applied Physics. We fabricated a Tm-doped CaF2 translucent ceramic by spark plasma sintering (SPS), and evaluated its photoluminescence (PL), scintillation, and dosimetric properties compared with those of a single crys...
H. Sekiya, H. Sekiya, C. Ida, H. Kubo, S. Kurosawa, K. Miuchi, T. Tanimori, K. Taniue, A. Yoshikawa, T. Yanagida, Y. Yokota, K. Fukuda, S. Ishizu, N. Kawaguchi, T. Suyama
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   633    May 2011
A new type high spatial resolution radiation detector based on a UV scintillatora UV imaging gas photomultiplier is presented. The prototype UV detector consists of a 10 cm×10 cm μPIC, 2 GEMs and a semitransparent CsI photocathode deposited on a M...
Daisuke Nakauchi, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Japanese Journal of Applied Physics   57    Oct 2018
© 2018 The Japan Society of Applied Physics. Pyrochlore La2Hf2O7, Gd2Hf2O7, and Lu2Hf2O7 single crystals were successfully grown by using an optical floating zone furnace. The synthesized crystals exhibit scintillation with a broad emission peakin...
Yuki Furuya, Hidehiko Tanaka, Kentaro Fukuda, Kentaro Fukuda, Noriaki Kawaguchi, Noriaki Kawaguchi, Yuui Yokota, Takayuki Yanagida, Valery Chani, Martin Nikl, Akira Yoshikawa, Akira Yoshikawa
Journal of Crystal Growth   318 791-795   Mar 2011
(Na0.425xLu0.575-x-yNdy)F2.15-2x(x=0, y=0, 0.001, 0.01, 0.05, 0.1, 0.2; x=±0.01, 0.02, 0.05, y=0.05) single crystals were grown from the melt using the precise atmosphere control type Micro-Pulling-Down (μ-PD) method to examine their potential as ...
Daiki Shiratori, Yuya Isokawa, Hayata Samizo, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Materials Science: Materials in Electronics      Jan 2018
© 2018, Springer Science+Business Media, LLC, part of Springer Nature. In this study, we evaluated the dosimetric and Radio-luminescence (RL) properties of Ce-doped 90KPO3-10Al2O3 glasses. The glass samples doped with different concentrations of C...
Yuki Furuya, Hidehiko Tanaka, Kentaro Fukuda, Kentaro Fukuda, Noriaki Kawaguchi, Noriaki Kawaguchi, Yuui Yokota, Takayuki Yanagida, Jan Pejchal, Jan Pejchal, Valery Chani, Martin Nikl, Akira Yoshikawa, Akira Yoshikawa
Physica Status Solidi (C) Current Topics in Solid State Physics   8 136-139   Jan 2011
The optical and scintillation properties of (Ca1-xNdx)F2+x, NdF3 and (Na0.425Lu0.575-xNdx)F2.15 single crystals grown from the melt by the Micro-Pulling-Down (μ-PD) method were compared. The grown crystals except NdF3 were single-phase materials w...
Masanori Koshimizu, Satoshi Kurashima, Atsushi Kimura, Mitsumasa Taguchi, Takayuki Yanagida, Hideki Yagi, Takagimi Yanagitani, Yutaka Fujimoto, Keisuke Asai
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms      Jan 2018
© 2018 Elsevier B.V. We analyzed the scintillation properties of Ce:Gd3Al2Ga3O12 (GAGG), which are dependent on linear energy transfer (LET). The rise in the scintillation temporal profiles was slow at high LET, whereas the decay did not significa...
Yutaka Fujimoto, Yutaka Fujimoto, Takayuki Yanagida, Hideyuki Sekiwa, Yuui Yokota, Valery Chani, Akira Yoshikawa, Akira Yoshikawa
Japanese Journal of Applied Physics   50    Jan 2011
The present study describes the first detailed evaluation of the rise and the decay time of scintillation phenomenon in In3+- and Ga3+-doped ZnO thin films with different dopant concentrations. In3+-(25, 55, and 141 ppm) and Ga3+-(33, 67, 333, and...
Hiromi Kimura, Kenji Shinozaki, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Journal of Non-Crystalline Solids      Jan 2018
© 2018 xCeF3-doped (30-x)SrF2-20Al2O3-50B2O3 glasses (x = 0.1, 1.0, 5.0 and 10 mol%) were synthesized by the conventional melt quenching method, and then characterizations for scintillator applications were performed. Regarding the photoluminescen...
Hidehiko Tanaka, Hidehiko Tanaka, Noriaki Kawaguchi, Noriaki Kawaguchi, Naoto Abe, Yuki Furuya, Yuui Yokota, Takayuki Yanagida, Jan Pejchal, Martin Nikl, Yoshiyuki Kawazoe, Akira Yoshikawa, Akira Yoshikawa
Optical Materials   33 284-287   Jan 2011
Nd3+doped CaF2single crystal scintillator has been investigated. We tried to grow 1%, 5%, 10%, 20%, 30% and 40% Nd3+doped CaF2single crystals by the simple melt-solidifying method. Powder X-ray diffraction (XRD) patterns were measured to identify ...
Noriaki Kawaguchi, Go Okada, Kentaro Fukuda, Takayuki Yanagida
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment      Jan 2018
© 2018 Elsevier B.V. We have tested high-temperature responses of prototype neutron detectors equipping Ce-doped lithium silicate glass (GS20), LiCaAlF6:Ce, LiCaAlF6:Eu, LiCaAlF6:Ce, Na, and LiCaAlF6:Eu, Na. These detectors were prepared by coupli...
Kei Kamada, Kei Kamada, Takayuki Yanagida, Kenji Aoki, Natalia Solovieva, Martin Nikl, Akihiro Fukabori, Akira Yoshikawa, Akira Yoshikawa
Journal of Crystal Growth   313 37-41   Dec 2010
In this study, (Gd1-xYx)F3(x=0.2, 0.4, 0.5 0.6 and 0.8) crystals were grown by the μ-PD method. Neither visible inclusions nor cracks were observed in (Gd1-xYx)F3(x=0.4, 0.5 and 0.6) crystals. Lattice constants increase linearly as the Y3concentra...
Sae Arai, Masanori Koshimizu, Yutaka Fujimoto, Takayuki Yanagida, Keisuke Asai
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment      Jan 2018
© 2018 Elsevier B.V. Neutron detectors have diverse applications in exploring natural resources and in security systems. Because there is an increased demand for neutron detectors based on 3He proportional counters, and 3He shortage is a concern. ...
Takayuki Yanagida, Noriaki Kawaguchi, Yutaka Fujimoto, Yuui Yokota, Miyuki Miyamoto, Hideyuki Sekiwa, Jun Kobayashi, Taichi Tokutake, Akira Yoshikawa
IEEE Nuclear Science Symposium Conference Record   188-191   Dec 2010
In the present paper, we describe the development of an -ray imaging detector based on a ZnO single crystalline scintillator and a position-sensitive photomultiplier tube (PSPMT). The ZnO crystal was grown by the hydrothermal synthesis method with...
Hiromi Kimura, Takumi Kato, Daisuke Nakauchi, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment      Jan 2018
© 2018 In this study, a CsBr single crystal was grown by the vertical Bridgman–Stockbargermethod, and CsBr transparent ceramic was made by spark plasma sintering. Then, these materials were investigated on the optical, scintillation and thermally-...
Y. Yokota, A. Yoshikawa, T. Yanagida, N. Kawaguchi, K. Fukuda, D. Totsuka
IEEE Nuclear Science Symposium Conference Record   1615-1618   Dec 2010
We developed a modified micro-pulling-down (-PD) method for crystal growth of halide materials with hygroscopic nature. By the modified -PD method, CeCl3 and Ce doped LaBr3 [Ce: LaBr3] single crystals were grown and the crystals indicated high tra...
Kenichi Watanabe, Natsumi Mitsuboshi, Akihisa Ishikawa, Atsushi Yamazaki, Sachiko Yoshihashi, Akira Uritani, Noriaki Kawaguchi, Takayuki Yanagida, Kentaro Fukuda
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment      Jan 2018
© 2018 Elsevier B.V. We developed a mixed powder neutron scintillator as a novel neutron detection material. Since LiF-Ag:ZnS mixed powder, which is a widely used mixed powder neutron scintillator, is opaque owing to the extremely high refractive ...
Noriaki Kawaguchi, Kentaro Fukuda, Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Kenichi Watanabe, Atsushi Yamazaki, Toshihisa Suyama, Akira Yoshikawa
IEEE Nuclear Science Symposium Conference Record   1823-1826   Dec 2010
As a candidate for the alternatives to 3He neutron detector, 2 inch size LiF-based eutectic composites were fabricated by Bridgman technique. The eutectic composites showed a good transparency and well ordered lamellar structure. Neutron response ...
H. Ono, Y. Fujimoto, T. Yahaba, T. Yanagida, M. Koshimizu, K. Asai
Optical Materials      Jan 2018
© 2018 In this study, the thermoluminescence (TL) characteristics and X-ray radiation response properties of 35CaO–15Al2O3–50B2O3:xTb4O7 (x = 0.25, 0.5, 1.0, 2.0, and 4.0 mol%) glasses were evaluated. These glasses, prepared by a conventional quen...
Noriaki Kawaguchi, Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Kei Kamada, Kentaro Fukuda, Toshihisa Suyama, Kenichi Watanabe, Atsushi Yamazaki, Akira Yoshikawa, Akira Yoshikawa
IEEE Nuclear Science Symposium Conference Record   3968-3970   Dec 2010
Thermal neutron imaging with Ce doped 6LiCaAlF6, which is a novel thermal neutron scintillator, was demonstrated. Ce doped 6LiCaAlF6 single crystal was grown by Czochralski technique and grown crystal was cut and polished to a plate shape. Setup o...
Takumi Kato, Yuki Usui, Go Okada, Noriaki Kawaguchi, Takayuki Yanagida
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment      Jan 2018
© 2018 Elsevier B.V. Scintillation and photoluminescence (PL) properties of undoped and Ce-doped Ca[Formula presented]Sc[Formula presented]Si[Formula presented]O[Formula presented] (CSSG) single crystals were investigated. The crystal samples were...
Akihiro Yamaji, Takayuki Yanagida, Yuui Yokota, Yutaka Fujimoto, Makoto Sugiyama, Akira Yoshikawa
IEEE Nuclear Science Symposium Conference Record   179-181   Dec 2010
The scintillation properties of undoped Lu3Ga5O 12 (LGG), Y3Ga5O12 (YGG) and Gd 3Ga5O12 (GGG) crystals were investigated at room temperature. All crystals resulted in around 70-80% transmittances in wavelengths 300 nm-500 nm. In addition, GGG crys...
YOSHIKAWA Akira, YANAGIDA Takayuki, FUKUDA Kentaro, KAWAGUCHI Noriaki, KAMADA Kei, FUJIMOTO Yutaka, YOKOTA Yuui, KUROSAWA Shunsuke
40(3) 171-176   Mar 2012
Takayuki Yanagida, Noriaki Kawaguchi, Yutaka Fujimoto, Yuui Yokota, Atsushi Yamazaki, Kenichi Watanabe, Kei Kamada, Akira Yoshikawa
IEEE Nuclear Science Symposium Conference Record   182-184   Dec 2010
Ce 1%, Eu 1%, and Eu 2%-doped LiSrAlF6 (LiSAF) single crystals were grown by the micro-pulling-down (-PD) method for thermal neutron applications. The crystals were transparent, 2.0 mm in diameter and 20-40 mm in length. Neither visible inclusions...
SUGIYAMA M., FUJIMOTO Y., TOTSUKA D., YOKOTA Y., YOSHIKAWA A., YANAGIDA T.
38(1) 21-24   Mar 2012
Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Akira Yoshikawa, Takatsugu Ishikawa, Hisako Fujimura, Hajime Shimizu, Hideki Yagi, Takagimi Yanagitani
IEEE Nuclear Science Symposium Conference Record   1612-1614   Dec 2010
Transparent ceramic Ce 0.5% doped Lu3Al5O 12 (LuAG) scintillator grown by the sintering method and single crystalline Ce 0.25% doped LuAG grown by the Czochralski method are prepared. They are cut to the physical dimensions 4 4 2 mm3. Their transm...
KUROSAWA S., YOKOTA Y., YANAGIDA T., YOSHIKAWA A., TANIUE K., KUBO H., TANIMORI T., SEKIYA H., FUKUDA K., ISHIZU S., KAWAGUCHI N., NAKAGAWA M., SUYAMA T.
38(1) 25-33   Mar 2012
Y. Fujimoto, T. Yanagida, Y. Yokota, N. Kawaguchi, K. Fukuda, D. Totsuka, K. Watanabe, A. Yamazaki, A. Yoshikawa, A. Yoshikawa
IEEE Nuclear Science Symposium Conference Record   192-194   Dec 2010
To develop new scintillators for thermal neutron detection, we investigated optical and scintillation properties of Ce3-doped, Pr3-doped Ca3(BO3)2single crystals grown by the micro-pulling down (-PD) method. In optical transmission spectra, the ab...
Yuki Furuya, Hidehiko Tanaka, Noriaki Kawaguchi, Noriaki Kawaguchi, Yuui Yokota, Takayuki Yanagida, Martin Nikl, Martin Nikl, Akira Yoshikawa
IEEE Nuclear Science Symposium Conference Record   226-229   Dec 2010
KLi(Y1xCex)F5 (x 0.001, 0.01, 0.03) single crystals were grown from the melt using the precise atmosphere control type Micro-Pulling-Down (-PD) method to examine their potential as a new thermal neutron scintillators. The grown crystals were singl...
H. Takahashi, M. Yonetani, M. Matsuoka, T. Mizuno, Y. Fukazawa, T. Yanagida, Y. Fujimoto, Y. Yokota, A. Yoshikawa, N. Kawaguchi, S. Ishizu, K. Fukuda, T. Suyama, K. Watanabe, H. Tajima, Y. Kanai, N. Kawai, J. Kataoka, J. Katsuta, T. Takahashi, S. Gunji, M. Axelsson, M. Jackson, M. Kiss, W. Klamra, M. Kole, S. Larsson, P. Mallol, M. Pearce, F. Ryde, S. Rydstrom, G. Olofsson, H. G. Floren, T. Kamae, G. Madejski, G. Varner
IEEE Nuclear Science Symposium Conference Record   32-37   Dec 2010
To measure the flux of atmospheric neutrons and study the neutron contribution to the background of the main detector of the PoGOLite (Polarized Gamma-ray Observer) balloon-borne experiment, a thermal-neutron detector with a phoswich system of LiC...
Noriaki Kawaguchi, Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Kei Kamada, Kentaro Fukuda, Toshihisa Suyama, Kenichi Watanabe, Atsushi Yamazaki, Akira Yoshikawa, Akira Yoshikawa
IEEE Nuclear Science Symposium Conference Record   1004-1006   Dec 2010
Thermal neutron imaging with Eu doped 6LiCaAlF6, which is a novel thermal neutron scintillator, was demonstrated. Eu doped 6LiCaAlF6 single crystal was grown by Czochralski technique and grown crystal was cut and polished to a plate shape. Setup o...
Kei Kamada, Takayuki Yanagida, Takanori Endo, You Fujimoto, Yoshiyuki Usuki, Akira Yoshikawa
IEEE Nuclear Science Symposium Conference Record   1-3   Dec 2010
Read out test of inorganic-organic hybrid scintillator; Pr:LuAG single crystal covered with plastic scintillator are demonstrated. The Pr:LuAG sample coated with bis-MSBTB-PVD containing WLS showed the better light output and energy resolution tha...
Y. Yokota, T. Yanagida, N. Kawaguchi, K. Fukuda, A. Yoshikawa, M. Nikl
IEEE Nuclear Science Symposium Conference Record   223-225   Dec 2010
We have investigated physical properties of Na, Ce3 co-doped LiCaAlF6 [Na, Ce:LiCAF] single crystals grown by micro-pulling-down method. In their X-ray diffraction measurements, grown crystals except for Ce 2%, Na 2%:LiCAF indicated a second phase...
Noriaki Kawaguchi, Kentaro Fukuda, Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Kenichi Watanabe, Atsushi Yamazaki, Toshihisa Suyama, Akira Yoshikawa
IEEE Nuclear Science Symposium Conference Record   1000-1003   Dec 2010
As a candidate for the alternatives to 3He neutron detector, 2 inch size LiF-based eutectic composites were fabricated by Bridgman technique. The eutectic composites showed a good transparency and well ordered lamellar structure. Neutron response ...
Takayuki Yanagida, Yutaka Fujimoto, Yuki Furuya, Yuui Yokota, Noriaki Kawaguchi, Kei Kamada, Jan Pejchal, Varely Chani, Kentaro Fukuda, Daisuke Totsuka, Koro Uchiyama, Kuniyoshi Mori, Ken Kitano, Martin Nikl, Akira Yoshikawa
IEEE Nuclear Science Symposium Conference Record   185-187   Dec 2010
These instructions provide guidelines for preparing manuscripts for submission to the Conference Record (CR) of the 2010 IEEE Nuclear Science Symposium and Medical Imaging Conference. If you are using Microsoft Word 6.0 or later to prepare your ma...
Hidehiko Tanaka, Hidehiko Tanaka, Yuki Furuya, Yuui Yokota, Takayuki Yanagida, Akira Yoshikawa, Yoshiyuki Kawazoe
IEEE Nuclear Science Symposium Conference Record   220-222   Dec 2010
Ce 0.1 % doped KLu2F7 single crystal was successfully grown from the melt by the modified micro-pulling-down (-PD) setup and quenching method. Transmittance, photoluminescence spectrum, photoluminescence decay time, radioluminescence decay time an...
SUGIYAMA Makoto, YANAGIDA Takayuki, YOKOTA Yuui, ITO Akihiko, FUKUDA Kentaro, KAWAGUCHI Noriaki, YAMAJI Akihiro, FUKABORI Akihiro, AN Liqiong, FUJIMOTO Yutaka, FURUYA Yuki, TANAKA Hidehiko, GOTO Takashi, YOSHIKAWA Akira
The Review of laser engineering   39(5) 306-311   May 2011
Daisuke Totsuka, Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Akira Yoshikawa, Akira Yoshikawa
IEEE Nuclear Science Symposium Conference Record   1292-1295   Dec 2010
Rare earth (Pr, Nd and Tm) doped Lu2SiO5 (LSO) single crystals were grown by the micro-pulling down (μ-PD) method. The concentrations were added 0.05, 0.10, and 0.25% of Pr, 0.10, 0.25, and 0.50% of Nd, 0.1, 1, 10, and 100% of Tm with respect to L...
Y. Fujimoto, T. Yanagida, Y. Yokota, V. V. Kochurikhin, A. Yoshikawa, A. Yoshikawa
IEEE Nuclear Science Symposium Conference Record   195-197   Dec 2010
We studied optical- and scintillation properties of LuVO4 single crystal grown by the Czochralski (CZ) method with RF heating system. The vanadate crystal show high transmittance ( 80 %) in the 400-900 nm wavelength range. In both of photo- and ra...
M. Sugiyama, Y. Fujimoto, T. Yanagida, Y. Yokota, A. Yoshikawa, A. Yoshikawa
IEEE Nuclear Science Symposium Conference Record   201-204   Dec 2010
Scintillation properties of Nd-doped Lu3Al5O 12 (Nd:LuAG) single crystals grown by the micro-pulling down (-PD) method have been studied. The Nd concentration ranged from 0.1 to 3 mol%. The grown crystals were transparent and had a single-phase co...
Kei Kamada, Takayuki Yanagida, Martin Nikl, Akihiro Fukabori, Akira Yoshikawa, Kenji Aoki
Journal of Crystal Growth   312 2795-2798   Sep 2010
Pr1%:K(Y1-xLux)3F10 (x=0, 0.2, 0.4) single crystals were grown by the μ-PD method. All the grown crystals were greenish and perfectly transparent without any inclusions or cracks. Radioluminescence spectra and decay kinetics of the Pr1%:K(Y,Lu) 3F...
Yuka Miyamoto, Yuka Miyamoto, Kazuya Kinoshita, Haruki Kobayashi, Akihiko Fujiwara, Shin Koyama, Yoshinori Takei, Hidehito Nanto, Takayoshi Yamamoto, Toshio Kurobori, Takayuki Yanagida, Akira Yoshikawa, Masaaki Sakakura, Yasuhiko Shimotsuma, Kiyotaka Miura, Kazuyuki Hirao
Sensors and Materials   22 235-245   Aug 2010
Optical properties such as optical absorption spectrum and radiophotoluminescence (RPL) emission and excitation spectra of Ag +-activated phosphate glass before and after X-ray irradiation were investigated in this study. It is found that the RPL ...
Noriaki Kawaguchi, Takayuki Yanagida, Yoshisuke Futami, Kentaro Fukuda, Toshihisa Suyama, Yuui Yokota, Akira Yoshikawa, Akira Yoshikawa, Martin Nikl
Optical Materials   32 1325-1328   Aug 2010
Nd concentration dependence on the scintillation properties of Nd x Ba1-x F2+x (x = 0.001-0.5) crystals were investigated. From X-ray induced emission spectra, the intensity from an intrinsic luminescence of BaF2 including core-valence luminescenc...
Akira Yoshikawa, Akira Yoshikawa, Takayuki Yanagida, Kei Kamada, Kei Kamada, Yuui Yokota, Jan Pejchal, Jan Pejchal, Akihiro Yamaji, Yoshiyuki Usuki, Seiichi Yamamoto, Masayasu Miyake, Kazuaki Kumagai, Katsuhisa Sasaki, T. R. Dos Santos, Mamoru Baba, Masatoshi Ito, Masatoshi Ito, Motohiro Takeda, Noriaki Ohuchi, Martin Nikl
Optical Materials   32 1294-1297   Aug 2010
The breast cancer is one of the most frequent cause of death among female cancer patients. However, when discovered at the early stage, the probability of recovery is very high. Therefore, the development of positron emission mammography (PEM) to ...
Valery I. Chani, Georges Boulon, Georges Boulon, Wei Zhao, Wei Zhao, Takayuki Yanagida, Akira Yoshikawa, Akira Yoshikawa
Japanese Journal of Applied Physics   49 0756011-0756016   Jul 2010
The paper deals with segregation of rare earth doping cations in solid-state hosts. Increased concentration of Ce3+ and Nd 3+ on the grain boundaries of transparent garnet optical ceramics was recently reported. These experimental results correlat...
Toshihiko Shimizu, Marilou Cadatal-Raduban, Kohei Yamanoi, Satoru Takatori, Masahiro Kouno, Minh Pham, Elmer Estacio, Tomoharu Nakazato, Nobuhiko Sarukura, Noriaki Kawaguchi, Noriaki Kawaguchi, Kentaro Fukuda, Kentaro Fukuda, Toshihisa Suyama, Takayuki Yanagida, Yuui Yokota, Akira Yoshikawa, Fumio Saito
IEEE Transactions on Nuclear Science   57 1204-1207   Jun 2010
We report the vacuum ultraviolet luminescence characteristics of a micro-pulling down method grown Er3+: LiCaAlF6. Emission at 163 nm with a lifetime of 1.3-μs was observed with F2laser (157-nm) pumping. This is one of the shortest emission wavele...
Naoto Abe, Yuui Yokota, Takayuki Yanagida, Noriaki Kawaguchi, Noriaki Kawaguchi, Kentaro Fukuda, Kentaro Fukuda, Jan Pejchal, Jan Pejchal, Martin Nikl, Akira Yoshikawa, Akira Yoshikawa
IEEE Transactions on Nuclear Science   57 1320-1324   Jun 2010
Transparent K3LuF6single crystals doped with rare earth ions were successfully grown by the micro-pulling down method (μ-PD). X-ray diffraction measurements showed that the as-grown crystals possess monoclinic structure with P21/n space group. The...
Naoto Abe, Yuui Yokota, Takayuki Yanagida, Noriaki Kawaguchi, Noriaki Kawaguchi, Jan Pejchal, Jan Pejchal, Akira Yoshikawa, Akira Yoshikawa
IEEE Transactions on Nuclear Science   57 1304-1307   Jun 2010
Tm3+doped BaF2single crystal scintillator has been investigated. Undoped, 0.1, 0.5, and 1% Tm -doped BaF2are compared in terms of their decay time, light yield, non-proportionality and energy resolution. The fast component of Tm doped BaF2is chara...
Yuui Yokota, Takayuki Yanagida, Naoto Abe, Noriaki Kawaguchi, Kentaro Fukuda, Martin Nikl, Akira Yoshikawa
IEEE Transactions on Nuclear Science   57 1241-1244   Jun 2010
We have investigated effects of Ce concentration on optical and scintillation properties for Ce doped LiYF4[Ce:LiYF4] single crystals. Li(Y1-x,Cex,)F4single crystals with more than 75% transparency were grown by micro-pulling-down method in the ra...
Yutaka Fujimoto, Yuui Yokota, Takayuki Yanagida, Jan Pejchal, Jan Pejchal, Hayato Konno, Kazumasa Sugiyama, Martin Nikl, Akira Yoshikawa, Akira Yoshikawa
IEEE Transactions on Nuclear Science   57 1264-1267   Jun 2010
The growth, optical and luminescence characteristics of Pr-doped Sr3Y(BO3)3(Pr:SrYBO) single crystals are studied. The Pr:SYBO single crystals with dimension of φ 2.0 × 30 mm3were grown by micro-pulling down method with radio frequency heating sys...
Tomoharu Nakazato, Marilou Cadatal-Raduban, Kohei Yamanoi, Misuki Tsuboi, Yusuke Furukawa, Yusuke Furukawa, Minh Pham, Elmer Estacio, Toshihiko Shimizu, Nobuhiko Sarukura, Nobuhiko Sarukura, Kentaro Fukuda, Toshihisa Suyama, Takayuki Yanagida, Yuui Yokota, Akira Yoshikawa, Fumio Saito
IEEE Transactions on Nuclear Science   57 1208-1210   Jun 2010
Vacuum ultraviolet fluorescence from Czochralski method-grown Nd3+:LaF3excited by 290 nm femtosecond pulses from a Ti:sapphire laser is reported. Peak emission at 175 nm with 7 ns lifetime is observed. This decay time would be one of the fastest a...
Naoto Abe, Yuui Yokota, Takayuki Yanagida, Noriaki Kawaguchi, Noriaki Kawaguchi, Jan Pejchal, Jan Pejchal, Martin Nikl, Kentaro Fukuda, Kentaro Fukuda, Akira Yoshikawa, Akira Yoshikawa
IEEE Transactions on Nuclear Science   57 1278-1281   Jun 2010
Because there is an overlap of the 5d-4f emission transition of Tm3+and absorption transition of Nd3+, an energy transfer between Nd3+and Tm3+in LaF3was supposed to enhance the efficiency of the previously studied Nd:LaF3scintillation material. In...
Jan Pejchal, Jan Pejchal, Jan Pejchal, Martin Nikl, Kentaro Fukuda, Noriaki Kawaguchi, Takayuki Yanagida, Takayuki Yanagida, Yuui Yokota, Yuui Yokota, Akira Yoshikawa, Akira Yoshikawa, Vladimir Babin
IEEE Transactions on Nuclear Science   57 1196-1199   Jun 2010
Doubly doped LaF3:Er, Nd scintillation crystals were grown by modified micropulling-down method. The Er codoping was chosen to enhance the energy transfer from the host lattice to the Nd3+luminescence center via the 5d-levels of Er3+, which can be...
Akihiro Fukabori, Takayuki Yanagida, Jan Pejchal, Jan Pejchal, Shuji Maeo, Yuui Yokota, Akira Yoshikawa, Akira Yoshikawa, Takayasu Ikegami, Federico Moretti, Kei Kamada
Journal of Applied Physics   107    Apr 2010
Various fundamental characteristics of Y2O3ceramics, such as optical transmittance, reflectivity, absorption coefficient, refractive index, and dielectric constant, were investigated. Furthermore, in order to evaluate the possible application of t...
Jan Pejchal, Jan Pejchal, Martin Nikl, Kentaro Fukuda, Noriaki Kawaguchi, Takayuki Yanagida, Yuui Yokota, Akira Yoshikawa, Akira Yoshikawa, Vladimir Babin
Radiation Measurements   45 265-267   Mar 2010
Doubly doped BaY2F8:Er,Nd scintillation crystals were grown by modified micro-pulling-down method. The Er co-doping was chosen to enhance the energy transfer from the host lattice to the Nd3+luminescence center via the 5d-levels of Er3+, which can...
Yuui Yokota, Takayuki Yanagida, Yutaka Fujimoto, Martin Nikl, Akira Yoshikawa, Akira Yoshikawa
Radiation Measurements   45 472-474   Mar 2010
We have investigated luminescent properties of nondope, Ce and Pr doped NaCl [nondope NaCl, Ce:NaCl, Pr:NaCl] single crystals grown by a modified micro-pulling-down method with a removable chamber system. Nondope, Ce 1% and Pr 1% doped NaCl crysta...
Akihiro Fukabori, Takayuki Yanagida, Federico Moretti, Federico Moretti, Yuui Yokota, Rayko Shimura, Shuji Maeo, Shuji Maeo, Jan Pejchal, Jan Pejchal, Kei Kamada, Akira Yoshikawa, Akira Yoshikawa
Radiation Measurements   45 453-456   Mar 2010
Micro-pulling down (μ-PD) method allows to prepare single crystals quickly and relatively inexpensively. Since it is a melt growth and taking into account segregation phenomena, the μ-PD method allows also to obtain single crystals characterized b...
Wei Zhao, Wei Zhao, Cedric Mancini, David Amans, Georges Boulon, Georges Boulon, Thierry Epicier, Yin Min, Hideki Yagi, Takagimi Yanagitani, Takayuki Yanagida, Akira Yoshikawa
Japanese Journal of Applied Physics   49    Feb 2010
This paper characterizes the inhomogeneous rare earth activator distribution across grain boundaries in transparent rare earth doped optical ceramics. Ce3+ has been selected due to its high intensity fluorescence in visible range under blue or UV ...
Naoto Abe, Yuui Yokota, Takayuki Yanagida, Jan Pejchal, Jan Pejchal, Fumiko Nara, Noriaki Kawaguchi, Noriaki Kawaguchi, Kentaro Fukuda, Kentaro Fukuda, Martin Nikl, Akira Yoshikawa, Akira Yoshikawa
Japanese Journal of Applied Physics   49    Feb 2010
BaF2 is an intensively studied scintillator for the detection of gamma radiation due to its relatively high stopping power, radiation hardness and extremely fast response. BaF2 possesses the fast cross-luminescence component at 195 and 220nm with ...
Kentaro Fukuda, Kentaro Fukuda, Noriaki Kawaguchi, Noriaki Kawaguchi, Sumito Ishizu, Takayuki Yanagida, Toshihisa Suyama, Martin Nikl, Akira Yoshikawa, Akira Yoshikawa
Optical Materials   32 1142-1145   Jan 2010
Two-inch diameter Nd3+doped LaF3single crystals were successfully grown by the Czochralski technique. No remarkable absorption due to unfavorable impurities or color centers was observed from optical absorption measurements in the vacuum ultra-vio...
Akira Yoshikawa, Akira Yoshikawa, Takayuki Yanagida, Yuui Yokota, Akihiro Yamaji, Yutaka Fujimoto, Pejchal Jan, Pejchal Jan, Valery I. Chani, Noriaki Kawaguchi, Sumito Ishizu, Kentaro Fukuda, Toshihisa Suyama, Martin Nikl
Optical Materials   32 845-849   Jan 2010
Er- and Tm-doped LiCaAlF6(LiCAF) single crystals were grown by the micro-pulling-down (μ-PD) method. The crystals were transparent, 2.0 mm in diameter and 30-40 mm in length. Neither visible inclusions nor cracks were observed. Photoluminescence s...
Yuki Furuya, Noriaki Kawaguchi, Noriaki Kawaguchi, Naoto Abe, Yuui Yokota, Takayuki Yanagida, Martin Nikl, Akira Yoshikawa, Akira Yoshikawa
Optical Materials   32 878-881   Jan 2010
NdF3single crystal was efficiently grown from the melt by the micro-pulling-down (μ-PD) method. The grown crystal had a single-phase confirmed by XRD and showed a highly symmetric peak by XRC. Then optical properties and α-ray excited scintillatio...
Kazutoshi Tabata, Yo Ichikawa, Shingo Ono, Kentaro Fukuda, Toshihisa Suyama, Yuui Yokota, Takayuki Yanagida, Akira Yoshikawa, Fumio Saito
Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest      Dec 2009
We report on photoconductive detector based on CeF3 thin films in ultraviolet region. CeF3 thin films were grown by pulse laser deposition. The sensitivity spectrum of detector shows the response below 310 nm. © 2009 IEEE.
Yuki Furuya, Hidehiko Tanaka, Noriaki Kawaguchi, Noriaki Kawaguchi, Naoto Abe, Yuui Yokota, Takayuki Yanagida, Kei Kamada, Martin Nikl, Akira Yoshikawa, Akira Yoshikawa
IEEE Nuclear Science Symposium Conference Record   1501-1504   Dec 2009
NdF3 single crystal was efficiently grown from the melt by the micro-pulling-down (μ-PD) method. The grown crystal had a single phase confirmed by XRD. Then Optical properties and α-ray excited scintillation properties in Vacuum Ultraviolet (VUV) ...
Yusuke Furukawa, Marilou Cadatal, Kohei Yamanoi, Satoru Takatori, Minh Pham, Elmer Estacio, Tomoharu Nakazato, Toshihiko Shimizu, Nobuhiko Sarukura, Ken Kitano, Kozo Ando, Koro Uchiyama, Yoshio Isobe, Kentaro Fukuda, Kentaro Fukuda, Toshihisa Suyama, Takayuki Yanagida, Yuui Yokota, Akira Yoshikawa, Fumio Saito
Japanese Journal of Applied Physics   48 0965031-0965034   Dec 2009
Details of the design and development of a bright vacuum ultraviolet Seya-Namioka type spectrometer and streak camera system with reflection-type input optics is presented. The Seya-Namioka spectrometer has a 40mm by 45mm holographic grating with ...
Akira Yoshikawa, Akira Yoshikawa, Takayuki Yanagida, Yuui Yokota, Kei Kamada, Yoshiyuki Usuki, Martin Nikl
IEEE Nuclear Science Symposium Conference Record   1524-1526   Dec 2009
Functional possibilities of inorganic-organic hybrid scintillator; Pr: LuAG scintillator covered with plastic scintillator is demonstrated. When 6planes of Pr: LuAG scintillator cube are covered with practice scintillator (BC-499), 30 % higher lig...
Akira Yoshikawa, Akira Yoshikawa, Takayuki Yanagida, Takayuki Yanagida, Yuui Yokota, Yuui Yokota, Noriaki Kawaguchi, Sumito Ishizu, Kentaro Fukuda, Toshihisa Suyama, Kyoung Jin Kim, Kyoung Jin Kim, Jan Pejchal, Jan Pejchal, Jan Pejchal, Martin Nikl, Kenichi Watanabe, Masayasu Miyake, Mamoru Baba, Kei Kamada, Kei Kamada
IEEE Transactions on Nuclear Science   56 3796-3799   Dec 2009
Ce2%:6LiCaAlF6(6LiCAF) single crystal (nominal composition) with 2 mm in diameter and 50 mm in length was grown by the micro-pulling-down method. Emission from the perturbed Ce3+centers was observed in an a-ray excited radioluminescence. The neutr...
Takayuki Yanagida, Yuui Yokota, Shuji Maeo, Kei Kamada, Akira Yoshikawa, Noriaki Kawaguchi, Sumito Ishizu, Kentaro Fukuda
IEEE Nuclear Science Symposium Conference Record   1449-1451   Dec 2009
Nd3+ 0.5% doped single crystal LiCaAlF6 scintillator was grown by the micro-pulling down (μ-PD) method. It was cut and polished to the physical dimension of 1 x 2 x 7 mm3. In transmittance spectrum, Nd3+ 5d-4f absorption observed at 175 nm and the...
H. Takahashi, M. Yonetani, M. Matsuoka, T. Mizuno, Y. Fukazawa, T. Yanagida, Y. Yokota, A. Yoshikawa, N. Kawaguchi, S. Ishizu, K. Fukuda, T. Suyama
IEEE Nuclear Science Symposium Conference Record   2105-2107   Dec 2009
For high-sensitivity neutron measurement, we developed a phoswich detector consisting of LiYF4 (Ce 1%) and BGO crystals. Light outputs of LiYF4 excited from α-ray (simulating neutron excitation) have the faster decay-time constant τ ∼ 50 ns, compa...
Toshihiko Shimizu, Marilou Cadatal, Kouhei Yamanoi, Satoru Takatori, Minh Pham, Elmer Estacio, Tomoharu Nakazato, Nobuhiko Sarukura, Kentaro Fukuda, Kentaro Fukuda, Toshihisa Suyama, Takayuki Yanagida, Takayuki Yanagida, Akira Yoshikawa, Fumio Saito
Optics InfoBase Conference Papers      Dec 2009
Vacuum ultraviolet fluorescence from micro-pulling down method-grown Er:LiCAF is found to have 163-nm peak emission with 1.3-μs lifetime, making it one of the shortest emission wavelengths from solid-state materials reported. © 2009 Optical Societ...
Kei Kamada, Kousuke Tsutsumi, Takayuki Yanagida, Takanori Endo, Yoshiyuki Usuki, Akira Yoshikawa, Akihiro Fukabori
IEEE Nuclear Science Symposium Conference Record   1456-1458   Dec 2009
Pr:LuAG crystals possess interesting properties such as high density, high light yield, and very fast 5d-4f emission decay time. Recently, we developed a Pr:LuAG single crystal with a diameter of 92mm for scintillator applications such as medical ...
Noriaki Kawaguchi, Takayuki Yanagida, Takayuki Yanagida, Yuui Yokota, Yuui Yokota, Kenichi Watanabe, Kei Kamada, Kei Kamada, Kentaro Fukuda, Toshihisa Suyama, Akira Yoshikawa, Akira Yoshikawa
IEEE Nuclear Science Symposium Conference Record   1493-1495   Dec 2009
Eu doped LiCaAlF6 (Eu:LiCAF) single crystal with 2-inch in diameter was grown by Czochralski technique. The grown crystal was free from any visible inclusions or cracks. The neutron responses using 252Cf were compared with that of Li-glass (GS20, ...
Hidehiko Tanaka, Hidehiko Tanaka, Yuki Furuya, Noriaki Kawaguchi, Noriaki Kawaguchi, Naoto Abe, Yuui Yokota, Takayuki Yanagida, Martin Nikl, Kei Kamada, Akira Yoshikawa, Akira Yoshikawa, Yoshiyuki Kawazoe
IEEE Nuclear Science Symposium Conference Record   1505-1508   Dec 2009
Nd3+ doped CaF2 single crystal scintillator has been investigated. We tried to grow 1, 5, 10, 20, 30 and 40% Nd doped CaF2 single crystals by the simple melt-solidifying method. Those sampeles are compared in terms of their X-ray excited radio lum...
Kazutoshi Tabata, Yo Ichikawa, Shingo Ono, Kentaro Fukuda, Toshihisa Suyama, Yuui Yokota, Takayuki Yanagida, Akira Yoshikawa, Fumio Saito
Optics InfoBase Conference Papers      Dec 2009
We report on photoconductive detector based on CeF3 thin films in ultraviolet region. CeF3 thin films were grown by pulse laser deposition. The sensitivity spectrum of detector shows the response below 310 nm. © 2009 IEEE.
Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Shuji Maeo, Kei Kamada, Akira Yoshikawa, Akira Yoshikawa, Miyuki Miyamoto, Jun Kobayashi, Taichi Tokutake, Hideyuki Sekiwa
IEEE Nuclear Science Symposium Conference Record   1452-1455   Dec 2009
Ga 25, 55, and 552 ppm doped, In 25, 53, and 141 ppm doped, Mg 1, 5, 10, 13 mol% doped ZnO thin film scintillators were grown by the Liquid Phase Epitaxy (LPE) method. Their transmittance, α-ray induced emission spectra were evaluated. The transmi...
Kei Kamada, Takayuki Yanagida, Jun Kataoka, Akira Yoshikawa, Akihiro Fukabori, Kousuke Tsutsumi, Takanori Endo, Yoshiyuki Usuki
IEEE Nuclear Science Symposium Conference Record   1949-1951   Dec 2009
In this work, energy resolution of Pr:LuAG scintillator was investigated using PMT (Hamamatsu, R7600U), conventional Si-APD (Hamamatsu, S8664-8222) and UV-enhanced Si-APD (Hamamatsu, S8664-8223) at 20 °C hy 662keV gamma-ray irradiation. The APD S8...
Marilou Cadatal, Yusuke Furukawa, Kouhei Yamanoi, Satoru Takatori, Minh Pham, Elmer Estacio, Tomoharu Nakazato, Toshihiko Shimizu, Nobuhiko Sarukura, Ken Kitano, Kozo Ando, Koro Uchiyama, Yoshio Isobe, Kentaro Fukuda, Kentaro Fukuda, Toshihisa Suyama, Takayuki Yanagida, Takayuki Yanagida, Akira Yoshikawa, Fumio Saito
Optics InfoBase Conference Papers      Dec 2009
Bright vacuum ultraviolet Seya-Namioka type spectrometer and streak camera system with reflection-type input optics is developed and used to measure 175-nm Nd3+:LaF3 fluorescence with 7-ns decay time. © 2009 Optical Society of America.
Shunsuke Kurosawa, Hidetoshi Kubo, Toru Tanimori, Kojiro Taniue, Hiroyuki Sekiya, Hiroyuki Sekiya, Akira Yoshikawa, Takayuki Yanagida, Yuui Yokota, Kentaro Fukuda, Sumito Ishizu, Noriaki Kawaguchi, Toshihisa Suyama
Proceedings of Science      Dec 2009
We developed a novel position-sensitive radiation detector that consists of an ultraviolet (UV) imaging gas photomultiplier and a UV scintillator. The former consists of a micro pixel gaseous chamber (μ-PIC), two gas electron multipliers (GEMs), a...
Takayuki Yanagida, Yuui Yokota, Yutaka Fujimoto, Akira Yoshikawa, Akira Yoshikawa, Noriaki Kawaguchi, Sumito Ishizu, Kentaro Fukuda, Toshihisa Suyama, Nobuhiko Sarukura
Japanese Journal of Applied Physics   48 0855031-0855034   Dec 2009
Pr-doped LiYF4 (YLF) and LiCaAlF6 (LiCAF) single crystals were grown by the micro-pulling-down (μ-PD) method. The crystals were transparent, 2.0mm in diameter, and 40-50mm in length. Neither visible inclusions nor cracks were observed. Transmittan...
H. Sekiya, H. Sekiya, C. Ida, H. Kubo, S. Kurosawa, T. Tanimori, A. Yoshikawa, T. Yanagida, Y. Yokota, K. Fukuda, S. Ishizu, N. Kawaguchi, T. Suyama
Journal of Instrumentation   4    Nov 2009
A new large area UV photon detector with micro pattern gaseous detectors is developed and evaluated. A semitransparent CsI photocathode deposited on a MgF2 window was combined with 10cm × 10cm GEM and μPIC. Using Ar+C2H6 (10%) gas, we achieved the...
Toshihiko Shimizu, Marilou Cadatal, Kouhei Yamanoi, Satoru Takatori, Minh Pham, Elmer Estacio, Tomoharu Nakazato, Nobuhiko Sarukura, Kentaro Fukuda, Kentaro Fukuda, Toshihisa Suyama, Takayuki Yanagida, Takayuki Yanagida, Akira Yoshikawa, Fumio Saito
2009 Conference on Lasers and Electro-Optics and 2009 Conference on Quantum Electronics and Laser Science Conference, CLEO/QELS 2009      Nov 2009
Vacuum ultraviolet fluorescence from micro-pulling down method-grown Er:LiCAF is found to have 163-nm peak emission with 1.3-μs lifetime, making it one of the shortest emission wavelengths from solid-state materials reported. ©2009 Optical Society...
Kei Kamada, Takayuki Yanagida, Yoshiyuki Usuki, Akira Yoshikawa
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   610 215-217   Oct 2009
Pr:Lu3Al5O12(LuAG) scintillator has interesting properties including a very fast 5d-4f emission decay time, excellent energy resolution, and high light yield. In order to use Pr:LuAG for radiation detection, the photodetector must have ultraviolet...
Lukasz Swiderski, Marek Moszyński, Antoni Nassalski, Agnieszka Syntfeld-Kazuch, Tomasz Szczȩśniak, Kei Kamada, K. Tsutsumi, Yoshiyuki Usuki, Takayuki Yanagida, Akira Yoshikawa, Weerapong Chewpraditkul, Marcin Pomorski
IEEE Transactions on Nuclear Science   56 2499-2505   Aug 2009
Properties of praseodymium and cerium doped Lutetium Aluminum Garnet (LuAG) were compared with cerium doped Lutetium Oxyorthosilicate ( SO) and Lanthanum Bromide (LaBr3). Light yield, its non-proportionality relative to 662 keV γ-rays and the depe...
L. Swiderski, M. Moszynski, A. Nassalski, A. Syntfeld-Kazuch, T. Szczesniak, K. Kamada, K. Tsutsumi, Y. Usuki, T. Yanagida, A. Yoshikawa
IEEE Transactions on Nuclear Science   56 934-938   Jun 2009
Scintillation properties of praseodymium doped LuAG have been investigated. The crystal is a dense (6.7 g/cm3) scintillator with a short decay time around 20 ns and wavelength emission spectrum peaked at 310 nm. The tested sample was 10 mm × 10 mm...
Kei Kamada, Takayuki Yanagida, Kousuke Tsutsumi, Yoshiyuki Usuki, Mitsuhiro Sato, Hiraku Ogino, Andrey Novoselov, Akira Yoshikawa, Masaaki Kobayashi, Shojiro Sugimoto, Fumio Saito
IEEE Transactions on Nuclear Science   56 570-573   Jun 2009
Pr:LuAG crystals possess interesting properties, such as high density, high light yield, and very fast 5d-4f emission decay time. Recently, we developed a Pr:LuAG single crystal with a diameter of 2 inches for scintillator applications, such as me...
SHIMIZU Toshihiko, CADATAL Marilou, YAMANOI Kouhei, TAKATORI Satoru, PHAM Minh, ESTACIO Elmer, NAKAZATO Tomoharu, SARUKURA Nobuhiko, KITANO Ken, ANDO Kouzo, UCHIYAMA Koro, ISOBE Yoshio, FUKUDA Kentaro, SUYAMA Toshihisa, YANAGIDA Takayuki, YOKOTA Yuui, YOSHIKAWA Akira, SAITO Fumio
394(0) 13-17   Dec 2009
Marilou Cadatal, Yusuke Furukawa, Kouhei Yamanoi, Satoru Takatori, Minh Pham, Elmer Estacio, Tomoharu Nakazato, Toshihiko Shimizu, Nobuhiko Sarukura, Ken Kitano, Kozo Ando, Koro Uchiyama, Yoshio Isobe, Kentaro Fukuda, Kentaro Fukuda, Toshihisa Suyama, Takayuki Yanagida, Takayuki Yanagida, Akira Yoshikawa, Fumio Saito
Optics InfoBase Conference Papers      Jan 2009
Bright vacuum ultraviolet Seya-Namioka type spectrometer and streak camera system with reflection-type input optics is developed and used to measure 175-nm Nd3+:LaF3 fluorescence with 7-ns decay time. © 2009 Optical Society of America.

Research Grants & Projects

 
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(若手研究(B))
Project Year: 2009 - 2010    Investigator(s): Takayuki YANAGIDA
We developed transparent ceramic Ce:LuAG scintillator for Si-APD readout. When 0.5% Ce was doped, Ce:LuAG exhibited a light yield of 16000ph/MeV under gamma-ray excitation. In order to achieve higher scintillation properties by band gap engineerin...