In laser-driven inertial fusion energy reactors, injected fuel pellets are continuously delivered into the reaction chamber and irradiated by laser beams injected at a frequency of tens of Hertz. 
 Thus far, a spherical shell pellet has be...
Journal of Physics D: Applied Physics 52(10) 105202 Mar 2019 [Refereed]
Thermal modifications induced by intense laser pulse irradiation of a material surface are studied. Single-crystalline yttria-stabilised zirconia (YSZ) is irradiated with Joule-class intense laser pulses with three focal intensities of 1012, 1013,...
Fusion Science and Technology 75(1) 36-48 Jan 2019 [Refereed]
The injection and engagement of pellets using laser beam irradiation is one of the key technologies to realize a laser-driven inertial fusion energy (IFE) reactor. We irradiated ultra-intense laser (11 TW: 0.6 J/110 fs 2 beams with a focal inten...
Feasibility Study of High-Average-Power Lasers for Laser-Driven Neutron Sources
Tokista Shigeki, Mori Yoshitaka, Mori Michiaki, Kawanaka Junji
The Review of Laser Engineering 46(10) 571-575 Oct 2018
High-average-power femtosecond lasers with terawatt and petawatt peak powers are essential for the practical achievement of such new technologies as laser-driven accelerators and laser-driven neutron sources. Although the average power of petawatt...
Pulse width evaluation of laser-driven neutron source
The Review of Laser Engineering 46(10) 594-598 Oct 2018 [Refereed]
We numerically evaluated the pulse widith of a laser-driven neutron source for electron- and proton-driven pitcher-catcher schemes with a light water moderator. Particle-in-cell simulations were conducted to simulate laser irradiation on the pitch...
Characteristics of Laser-Driven Neutron Sources
Y. Mori, Y. Abe, H. Tanaka, R. Hanayama, Y. Kiyanagi, H. Nagatomo, A. Sunahara
46(10) 564-570 Oct 2018
Laser-driven neutron sources offer a unique characteristic as a brightness neutron source because they provide a short pulse duration (less than ns) in time and a small spot size (a few mm^2) in space at the source point. The peak flux per driver ...
Japanese Journal of Applied Physics 57 050303 Apr 2018 [Refereed]
A magnetic thrust chamber is an important system of a laser fusion rocket, in which the plasma kinetic energy is converted into vehicle thrust by a magnetic field. To investigate the plasma extraction from the system, the ions in a plasma are diag...
Radiation Physics and Chemistry 146 91 May 2018 [Refereed]
The relative dose in a layer, which is thinner than the thickness of the dosimeter is evaluated using simulated depth-dose distributions, and the measured responses of dosimeters with acceleration voltages from 43 to 70 kV, via ultra-low-energy el...
Plasma Fusion Research 13 1306016 Feb 2018 [Refereed]
Laser fusion rocket is one of the candidate propulsion devices for Mars exploration. It obtains thrust from the interaction between plasma and magnetic field and this propulsion system is called magnetic thrust chamber. We constructed a spectromet...
We report an experimental demonstration of controlling plasma flow direction with a magnetic nozzle consisting of multiple coils. Four coils are controlled separately to form an asymmetric magnetic field to change the direction of laser-produced p...
Fast heating is a method of heating an assembled high-density plasma into a hot state by irradiating it with short-duration (sub-picosecond), high-intensity ( W ) laser pulses before the plasma expands and dissolves ...
Y. Mori, Y. Nishimura, R. Hanayama, S. Nakayama, K. Ishii, Y. Kitagawa, T. Sekine, Y. Takeuchi, T. Kurita, Y. Kato, N. Satoh, N. Kurita,T. Kawashima, O. Komeda, T. Hioki, T. Motohiro, A. Sunahara, Y. Sentoku, E. Miura, A. Iwamoto, and H. Sakagami
Proceedings of 44th EPS Conference on Plasma Physics Jul 2017
Y. Kitagawa, Y. Mori, K. Ishii, R. Hanayama, Y. Nishimura, S. Okihara, S. Nakayama, T. Sekine, M. Takagi, T. Watari, N. Satoh, T. Kawashima, O. Komeda, T. Hioki, T. Motohiro, H. Azuma, A. Sunahara, Y. Sentoku, Y. Arikawa, Y. Abe, E. Miura, T. Ozaki
Nuclear Fusion 57 076030 Jul 2017 [Refereed]
A CD shell was preimploded by two counter-propagatin green beams from the GEKKO laser system GXII (based at the Institute of Laser engineering, Osaka University), forming a dense core. The core was predominantly heated by energetic ions driven by ...
The Review of Laser Engineering 45(2) 58-70 Feb 2017
We review the progress of laser wakefield electron acceleration from the 1970s to the present. First, this review presents its initial history and beat-wave acceleration (the first laser plasma acceleration), including a tutorial of the laser plas...
Y. Mori, Y. Nishimura, R. Hanayama, K. Ishii, K. Fujita, S. Okihara, Y. Kitagawa, T. Sekine, N. Satoh, T. Kurita, M. Takagi, T. Watari, T. Kawashima, H. Kan, A. Sunahara, Y. Sentoku, O. Komeda, N. Nakamura, T. Kondo, M. Fujine, H. Azuma, T. Motohiro, T. Hioki, M. Kakeno, E. Miura, Y. Arikawa, T. Nagai, Y. Abe, T. Ozaki and A. Noda
Proceedings of Proceedings of 25th IAEA Fusion Energy Conference Jul 2016
We conduced experiments that 600 J/1.5 ps ultra-intense laser pulse was directly irradiated on an imploded core that was preformed by counter irradiating 300 J/1.3 ns laser pulses. The Laser for Fast Ignition Experiment (LFEX) directly irradiated ...
Y. Mori, Y. Nishimura, R. Hanayama, S. Nakayama, K. Ishii, Y. Kitagawa, T. Sekine, N. Sato, T. Kurita, T. Kawashima, H. Kan, O. Komeda, T. Nishi, H. Azuma, T. Hioki, T. Motohiro, A. Sunahara, Y. Sentoku, and E. Miura
A tailored-pulse-imploded core with a diameter of 70 μm is flashed by counterirradiating 110 fs, 7 TW
laser pulses. Photon emission (> 40 eV) from the core exceeds the emission from the imploded core by 6
times, even though the heating pulse energ...
Journal of Physics: Conference Series 717 012073 Jul 2016 [Refereed]
This reports provide an amorphous nanostructuralization technique on the surface modification in Highly Oriented Pyrolytic Graphite (HOPG) by using a femtosecond laser. We showed, for the first time, that the surface of HOPG is changed to the amor...
S. Matsui, Y. Mori, T. Nonaka, T. Hattori, Y. Kasamatsu, D. Haraguchi, Y. Watanabe, K. Uchiyama and M. Ishikawa,
Review of Scientific Instruments 87 053309 May 2016 [Refereed]
For evaluation of on-site dosimetry and process design in industrial use of ultra-low energy electron beam (ULEB) processes, we evaluate the energy deposition using a thin radiochromic film and a Monte Carlo simulation. The response of film dosime...
Journal of Physics: Conference Series 688 012070 Apr 2016 [Refereed]
The HAMA is 1-Hz fast heating fusion driver pumped by a 10 J second-harmonic of diode-pumped Nd:glass laser: KURE-1. We have upgraded HAMA to realize an implosion of spherical shell target by using a remaining fundamental beam from KURE-1. This be...
Journal of Physics: Conference Series 688 012049 Apr 2016 [Refereed]
To construct a unified experimental machine CANDY using a kJ DPSSL driver in the fast-ignition scheme, the Laser for Fast Ignition Experiment (LFEX) at Osaka is used, showing that the laser-driven ions heat the preimploded core of a deuterated pol...
Journal of Physics: Conference Series 688 012036 Apr 2016 [Invited]
We have developed the shadowgraph and interferometer with second-harmonic of heating pulses laser to observe target and plasma in highly-repetitive fusion reaction experiments. In the deuterated polystyrene ((C8D8)n double foil experiment, we conf...
Journal of Physics: Conference Series 688 012026 Apr 2016 [Refereed]
Pellet injection and repetitive laser illumination are key technologies for realizing inertial fusion energy[1-4]. Neutron generator using lasers also requires a repeating pellet target supplier. Here we present the first demonstration of target i...
Plasma and Fusion Research 11 3406012 Feb 2016 [Refereed]
Magnetic thrust chamber is a propulsion system controlling plasma by a magnetic field and is expected as a propulsion system of laser fusion rocket. This rocket obtains thrust due to the interaction between plasma and magnetic field in the system....
Journal of Physics D 48 325305 Jul 2015 [Refereed]
A single shot of an ultra-intense laser with 0.8 J of energy and a pulse width of 110 fs (peak intensity of 1.15 × 1017 W cm−2) is divided into two beams and the two beams counter- irradiated onto a 0.5 mm-thick single crystal yttria-stabilized zi...
Transactions of the JSASS / Aerospace Technology Japan 13 17-21 Jun 2015 [Refereed]
The first demonstration of target acceleration by a strong magnetic field is conducted. Two miniature targets, a gold ball and a neodymium permanent magnet, are accelerated by a magnetic field. A magnetic-field strength as high as 1 kT is produced...
Y. Kitagawa, Y. Mori, O. Komeda, K. Ishii, R. Hanayama, K. Fujita, and S. Okihara, T. Sekine, N. Satoh, T. Kurita, M. Takagi, T. Watari, T. Kawashima, and H. Kan, Y. Nishimura, A. Sunahara, Y. Sentoku, N. Nakamura, T. Kondo, and M. Fujine, H. Azuma, T. Motohiro, T. Hioki, and M. Kakeno, E. Miura, Y. Arikawa, T. Nagai, and Y. Abe, S. Ozaki, A. Noda
Physical Review Letters 114(19) 195002 May 2015 [Refereed]
A novel direct core heating fusion process is introduced, in which a preimploded core is predominantly heated by energetic ions driven by LFEX, an extremely energetic ultrashort pulse laser. Consequently, we have observed the Dðd; nÞ3He-reacted ne...
Repetitive 1 Hz Fast-Heating Fusion Driver Called HAMA Pumped by Diode Pumped Solid State Laser
Review of Laser Engineering 42(2) Feb 2014 [Refereed]
We describe a repetitive fast-heating fusion driver called HAMA pumped by Diode Pumped Solid State Laser (DPSSL) to realize the counter irradiation of sequential implosion and heating laser beams. HAMA was designed to activate DPSSL for inertial c...
Review of laser-plasma acceleration research at GPI by using BEAT laser
Proceedings of The 15th Takayanagi Kenjiro Memorial Symposium S5-4-1-S5-4-4 Nov 2013 [Invited]
The laser-driven plasma electron accelerator can drive an acceleration gradient over
GV/cm, which is 1000 times higher than that of conventional RF cavity achieved. In
this decade, this society experiences tremendous improvement in relation to the...
Pellet injection and repetitive laser illumination are key technologies for realizing inertial fusion energy.
Numerous studies have been conducted on target suppliers, injectors, and tracking systems for flying pellet engagement.
Here we for the...
Journal of Applied Physics 114 083103 Aug 2013 [Refereed]
Ultra-intense laser-produced sub-ps X-ray pulses can detect backscattered signals from objects hidden in
aluminium containers. Coincident measurements using primary X-rays enable differentiation among acrylic,
copper and lead blocks inside the con...
Y. Mori, T. Sekine, O. Komeda, S. Nakayama, K. Ishii, R. Hanayama, K. Fujita, S. Okihara, N. Satoh, T. Kurita, T. Kawashima, H. Kan, N. Nakamura, T. Kondo, M. Fujine, H. Azuma, T. Hioki, M. Kakeno, T. Motohiro, Y. Nishimura, A. Sunahara, Y. Sentoku, and Y. Kitagawa
Nuclear Fusion 53 073011 Jun 2013 [Refereed]
A Ti:sapphire laser HAMA pumped by a diode-pumped solid-state laser (DPSSL) is developed to enable a high-repetitive inertial confinement fusion (ICF) experiment
to be conducted. To demonstrate a counter-irradiation fast-heating fusion scheme, a 3...
Plasma and Fusion Research 8 3404047 May 2013 [Refereed]
A table-top fusion experiment is performed. A 4 J/0.4-ns output of an LD-pumped high-rep. laser HAMA is divided into the imploding and heating beams, which are illuminated on double deuterated polystyrene foils separated by 100 µm. Hot electrons p...
Plasma and Fusion Research 8 1205020 Mar 2013 [Refereed]
Target injection is a key technology to realizing inertial fusion energy. Here we present the first demonstration
of target injection and neutron generation. We injected more than 600 spherical deuterated polystyrene
(C8D8) bead targets during 10 ...
Fusion Science and Technology 63(2) 296-300 Mar 2013 [Refereed]
A neutron generator is developed using 1-mm-diam spherical deuterated polystyrene targets on a rotating disk irradiated with an ultrahigh-intensity ( > 10^18 W/cm^2) diode-pumped laser. It consists of a rotating disk supplier, the targets, and a c...
Y. Mori, O. Komeda, K. Ishii, R. Hanayama, K. Fujita, S. Okihara,T.Sekine, N. Satoh, T. Kurita, T. Kawashima, H. Kan, N. Nakamura, T. Kondo, M.Fujine, H. Azuma, T. Hioki, M. Kakeno, T. Motohiro, Y. Nishimura, A. Sunahara, Y. Sentoku, Y. Kitagawa
Proceedings of 24th IAEA Fusion Energy Conference 519 Mar 2013
A DPSSL-pumped laser HAMA is developed to realize high-repetitive ICF experiment. To demonstrate a counter irradiation fast heating fusion scheme, amplified chirped pulse of 4J/0.4ns is divided into four beams, two for imploding and the others for...
Y. Kitagawa, Y. Mori, O. Komeda, K. Ishii, R. Hanayama, K. Fujita, S. Okihara,T.Sekine, N. Satoh, T. Kurita, T. Kawashima, H. Kan, N. Nakamura, T. Kondo, M.Fujine, H. Azuma, T. Hioki, M. Kakeno, T. Motohiro, Y. Nishimura, A. Sunahara, and Y. Sentoku
Proceedings of 24th IAEA Fusion Energy Conference 518 Mar 2013
We have proposed a compact fast ignition experiment to initiate a fusion reaction and to clarify its dynamics. A high-repetition-rate intense laser is for the first time used to the fusion research. We talk first about the roadmap to the power pla...
Y Kuramitsu, Y Sakawa, T Morita, T Ide, K Nishio, H Tanji, H Aoki, S Dono, C D Gregory, J N Waugh, N Woolsey, A Dizière, A Pelka, A Ravasio, B Loupias, M Koenig, S A Pikuz, Y T Li, Y Zhang, X Liu, J Y Zhong, J Zhang, G Gregori, N Nakanii, K Kondo, Y Mori, E Miura, R Kodama, Y Kitagawa, K Mima, K A Tanaka, H Azechi, T Moritaka, Y Matsumoto, T Sano, A Mizuta, N Ohnishi, M Hoshino and H Takabe
Plasma Physics and Controlled Fusion 54(12) 124049 Dec 2012 [Refereed]
We report our recent efforts on the experimental investigations related to the origins of cosmic rays. The origins of cosmic rays are long standing open issues in astrophysics. The galactic and extragalactic cosmic rays are considered to be accele...
We proposed the stand-off inspection of unknown or hidden objects by a laser-produced X-ray that has a
great potential for security applications or disaster relief. To demonstrate its principle, ultra-intense laser-produced sub-ps X-ray pulses det...
Trans. JSASS Aerospace Tech. Japan 10(ists28) Pb_109-Pb_114 Oct 2012 [Refereed]
In order to validate the concept of a magnetic thrust chamber for laser fusion rockets, the interaction between
laser-produced plasma and the magnetic field produced by a permanent magnet/coil is investigated.
Time variation in magnetic flux dens...
TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 10(28) Pb-71-Pb-77 Aug 2012 [Refereed]
The plasma behavior in a magnetic thrust chamber system for a laser fusion rocket is numerically simulated using a three-dimensional (3D) hybrid particle-in-cell (PIC) code and a one-dimensional (1D) radiation hydrodynamic code. The magnetic thrus...
Characteristics of Head-On Inverse Compton Scattering X-rays from Laser-Accelerated Quasi-Monoenergetic Electron Bunches
Y. Mori, H. Kuwabara, R. Hanayama, K. Ishii, T. Kawashima and Y. Kitagawa
Reports on The 429th Topical Meeting of The Laser Society of Japan-Science of Research with High-Power and Large-Energy Laser RTM-12-23 29-32 Aug 2012
The characteristics of inverse Compton scattering X-rays from laser-accelerated electron bunches are
presented. We review several experimental results recent obtained and compared them with the theory
predicted. A combination of femtosecond electr...
Applied Physics Express 5(5) 056401 May 2012 [Refereed]
Inverse Compton X-rays from laser-accelerated multiple electron bunches are observed. A Ti:sapphire laser (pulse energy: 500 mJ; pulse width: 150 fs) beam is divided into two beams. The main beam is focused onto an edge of a helium gas jet to acce...
Physics of Plasmas 19(5) 053106 May 2012 [Refereed]
Acceleration of electrons is demonstrated in a beat wave scheme by using a prepulse-free short-pulse (150 fs) double-line Ti-sapphire laser. To inject electrons, we used a hybrid target composed of a cone-drilled plate and a gas jet, where the con...
Y. Kitagawa, Y. Mori, O. Komeda, K. Ishii, R. Hanayama, K. Fujita, S. Okihara, T. Sekine, N. Satoh, T. Kurita, M. Takagi, T. Kawashima, H. Kan, N. Nakamura, T. Kondo, M. Fujine, H. Azuma, T. Motohiro, T. Hioki, Y. Nishimura, A. Sunahara, and Y. Sentoku
A compact fast core heating experiment is described. A 4-J 0.4-ns output of a laser-diode-pumped high repetition laser HAMA is divided into four beams, two of which counterilluminate double-deuterated polystyrene foils separated by 100 μm for imp...
A. Maeno, N. Yamamoto, H. Nakashima, S. Fujioka, A. Sunahara, T. Johzaki, Y. Mori
Applied Physics Letters 99(7) 071501 Aug 2011 [Refereed]
An experiment is conducted to measure an impulse for demonstrating a magnetic thrust chamber system for laser fusion rocket. The impulse is produced by the interaction between plasma and magnetic field. In the experiment, the system consists of pl...
Conference papeer of High Intensity Lasers and High Field Phenomena HThA5 Feb 2011
We have started a new project of inertial fusion driven by all diode-pumped solid-state laser (DPSSL). 105 DD fusion neutron yield from a 500-µm-thick deuterated polystyrene film has preliminarily demonstrated by 10 TW HAMA laser.
Physical Review E 83(2) 026401 Feb 2011 [Refereed]
Nonthermal acceleration of relativistic electrons is investigated with an intensive laser pulse. An energy distribution function of energetic particles in the universe or cosmic rays is well represented by a power-law spectrum, therefore, nontherm...
Plasma and Fusion Research 6 1306006 Feb 2011 [Refereed]
The first use of a high-repetition-rate laser-diode (LD)-pumped laser in a fusion target experiment is demonstrated. An LD-pumped Nd-solid state laser's output is coupled to a Ti:sapphire laser, enabling the resulting HAMA laser to generate 2-J, 8...
Physics of Plasmas 18(1) 010701 Jan 2011 [Refereed]
The first report on a model experiment of cosmic ray acceleration by using intense laser pulses is presented. Large amplitude light waves are considered to be excited in the upstream regions of relativistic astrophysical shocks and the wakefield a...
SEKINE T., KAWASHIMA T., SATO N., TAKAGI M., KAN H., KITAGAWA Y., MORI Y., HANAYAMA R., OKIHARA S., FUJITA K., ISHII K., NAKAMURA N., MIYAMOTO Y., AZUMA H., MOTOHIRO T., HIOKI T.
TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 8(27) Tb_1-Tb_4 Oct 2010 [Refereed]
Laser Fusion Rocket (LFR) is an advanced propulsion system that converts Inertial Fusion Energy into thrust energy in Magnetic Thrust Chamber. We study this system through numerical simulation and laser-produced plasma experiment at Extreme Ultra-...
Motonobu Tampo, Shinya Awano , Paul. R. Bolton , Kiminori Kondo , Kunioki Mima , Yoshitaka Mori , Hirotaka Nakamura , Motoaki Nakatsutsumi , Richard Burnite Stephens , Kazuo A. Tanaka , Tsuyoshi Tanimoto , Toshinori Yabuuchi , Ryosuke Kodama
Physics of Plasmas 17(7) 073110 Jul 2010 [Refereed]
High density energetic electrons that are created by intense laser plasma interactions drive MeV proton acceleration. The correlation between accelerated MeV protons and escaped electrons is experimentally investigated at laser intensities in the ...
Proceedings of IPAC'10, Kyoto, Japan 1 4404-4406 May 2010
A technique for remote detection of hidden objects is an urgent issue, but is not yet realized, because a source and a sensor must be located on the same side of the object. An ultra-intense laser can produce extremely short and...
Y. Mori, Y. Sentoku, K. Kondo, K. Tsuji, N. Nakanii, S. Fukumochi, M. Kashihara, K. Kimura, K. Takeda, K. A. Tanaka, T. Norimatsu, Tsuyoshi Tanimoto, H. Nakamura, M. Tampo, R. Kodama, E. Miura, K. Mima, and Y. Kitagawa
Physics of Plasmas 16(12) 123103 Dec 2009 [Refereed]
By using a cone attached to a capillary, electrons generated through a laser interaction were autoinjected and accelerated in a low-density wake field. The cone attached to the entrance of the capillary serves as an electron supplier. It increases...
Y. Kitagawa, Y. Mori, H. Kuwabara, S. Ootsuka, T. Makino, M. Ohta, T. Suzuki
Proceedings of the Thirteenth Advanced Accelerator Concepts Workshop. AIP Conference Proceedings 1086 171-176 2009 [Invited]
The laser accelerator provides us not only ultra high field, but also extremely short pulse radiation sources, the laser-produced X-rays. Using a 1.2 TW table-top Ti:sap laser, we are pursuing the activities for the industrial application. First w...
Electron injection into a forced excited plasma wake field driven by femto-sec beat wave
Y. Mori and Y. Kitagawa
Proceeding of International Interdisciplinary-Symposium on Gaseous and Liquid Plasmas ISGLP2008 Sep. 5-6, Akiu/Sendai (2008) 167-170 Sep 2008
N. Nakanii, K. Kondo, Y. Kuramitsu, Y. Mori, E. Miura, K. Tsuji, K. Kimura, S. Fukumochi, M. Kashihara, T. Tanimoto, H. Nakamura, T. Ishikawa, K. Takeda, M. Tampo, H. Takabe, R. Kodama, Y. Kitagawa, K. Mima, K. A. Tanaka
Applied Physics letters 93(8) 081501 Aug 2008 [Refereed]
Energetic electrons were generated by the interaction of a high-intensity laser pulse with a plasma preformed from a hollow plastic cylinder via laser-driven implosion. The spectra of a comparatively high-density plasma ?10^19 cm^−3 had a bump aro...
N Nakanii, K Kondo, Y Mori, E Miura, K Tsuji, K Takeda, S Fukumochi, M Kashihara, T Tanimoto, H Nakamura, T Ishikura, M Tampo, R Kodama, Y Kitagawa, K Mima, and K A Tanaka
Journal of Physics: Conference Series 112 042041 Apr 2008 [Refereed]
Energetic electrons were generated using a 3-mm-long plasma tube created by imploding a hollow polystyrene cylinder. The spectra of a comparatively high-density plasma ~1019cm−3 had a bump around 10 MeV. Moreover, electron energies in excess of 60...
KUWABARA Hajime, MORI Yoshitaka, KITAGAWA Yoneyoshi
Plasma and Fusion Research 3(0) 3-3 Feb 2008 [Refereed]
Backscattered X-ray intensity was measured coincidently with a CPA laser-produced X-ray pulse. Results show that the coincident measurement is useful in reducing the effect of natural radiation. Even for signals at the photon counting level, we ca...
Y. Mori, S. Fukumochi, Y. Hama, K. Kondo, Y. Sentoku and Y. Kitagawa
International Journal of Modern Physics B 21(3/4) 572-578 Feb 2007 [Refereed]
Development status of a double-line table top beat wave electron laser acceleration system is discussed. The advantage of beat wave driven laser accelerator is described here using 1D-PIC simulation comparing with a single laser wake-field acceler...
Yoneyoshi Kitagawa, Y. Mori, K. Kondoh, T. Norimatsu, S. Fukumochi, M. Kashihara, K. Kimura, T. Tanimoto, M. Tampo, K. Tsuji, N. Nakanii, Y. Sentoku
International Journal of Modern Physics B 21(3/4) 540-547 Feb 2007 [Refereed]
The discussion how to accelerate electrons to GeV leads us to the concept of the capillary. The 40 TW laser with prepulses, guided into a 1 cm-long capillary has accelerated the electrons to 100 MeV. The prepulse-free PW laser was also guided into...
Y. Mori, H. Nakashima, F. W. Baity, R. H. Goulding, M. D. Carter and D. O. Sparks
Thin Solid Films 506/507 583-587 May 2006 [Refereed]
The Mini-Radio Frequency Test Facility (Mini-RFTF) has contributed to helicon plasma source optimization for the Variable Specific Impulse Magnetoplasma Rocket (VASIMR). In this paper, we report how the source, using hydrogen and helium, can be op...
Yoshitaka Mori, Hieki Nakashima, Frederick W Baity, Richard H Goulding, Mark D Carter and Dennis O Sparks
Plasma Sources Science and Technology 13(3) 424-435 Jun 2004 [Refereed]
A high density (10^19 m^−3) hydrogen plasma has been sustained successfully in axially non-uniform static magnetic field configurations for frequencies both above and below the high density limit of the lower hybrid resonance frequency (LH-HD). Wa...
Comparing Experiments with Modeling to Optimize Light Ion Helicon Plasma Sources for VASIMR
M. D. Carter, F. W. Baity Jr., G. C. Barber, R. H. Goulding, Y. Mori, D. O. Sparks, K. F. White, E. F. Jaeger, F. R. Chang-Di´az and J. P. Squire
Transaction of fusion science and technology 43(1T) 125-129 Jan 2003 [Refereed]
The ability to obtain high plasma densities with high fractional ionization using readily available, low-cost components makes the helicon a candidate plasma source for many applications, including plasma rocket propulsion, fusion component testin...
M. D. Carter, F. W. Baity Jr., G. C. Barber, R. H. Goulding, Y. Mori, D. O. Sparks, K. F. White, E. F. Jaeger, F. R. Chang-Di´az and J. P. Squire
Physics of Plasmas 9(12) 5097-5110 Dec 2002 [Refereed]
The ability to obtain high plasma densities with high fractional ionization using readily available, low-cost components makes the helicon a candidate plasma source for many applications, including plasma rocket propulsion, fusion component testin...
H. Sou, Y. Takao, T. Noutsuka, Y. Mori, K. Uemura, and H. Nakashima
Vacuum 59(1) 73-79 Oct 2000 [Refereed]
Some experiments and computer simulations to develop a plasma propulsion system by using electron and ion cyclotron resonance (EICR) plasma are reported. The EICR thruster is an advanced space propulsion concept that has possible uses in satellite...
Electron Cyclotron Resonance (ECR) Plasma Thruster Research
Y. Mori, Y. Takao, K. Uemura, T. Gouda, T. Miyamoto, T. Esaki, T. Maeyama, T. Muranaka, and H. Nakashima
Proc. Int. Conf. Plasma Physics-2000 III 920-923 Oct 2000
Electron Cyclotron Resonance (ECR) Plasma Thruster Research
Y. Takao, T. Noutsuka, Y. Mori, K. Uemura, H. Sou, and H. Nakashima
22nd Int. Symp. Space Technology & Science 1 403-407 May 2000
ICRF Wave Propagation and Absorption in a Microwave Discharge Ion Thruster
Y. Mori, T. Noutsuka, Y. Takao, and H. Nakashima
Proc. 1st Cross Straits Symposium on Materials, Energy and Environmental Sciences 50-51 Nov 1999
ICRF Wave Propagation and Absorption in a Microwave Discharge Ion Thruster
Y. Mori, Y. Takao, and H. Nakashima
Proceedings of the 26th International Electric Propulsion Conference 2 1329-1335 Oct 1999
JUNO Anglo-Japanese Conference on Commercialization of Nuclear Fusion 25 Jun 2019 JUNO
Shell compression and direct heating using TSUZUMI target
MORI Yoshitaka
3 Dec 2018
Compact Fast Ignition experiments using Joule-class drive pulses under counterbeam configuration[Invited]
MORI Yoshitaka
2nd Asia-Pacific Conference on Plasma Physics, 12 Nov 2018
DEVELOPMENT OF SHELL INJECTION SYSTEM FOR THE FUTURE IFE POWER PLANT
1) Y. Mori, 2) A. Iwamoto, 1) K. Ishii, 3) Y. Nishimura, 1) R. Hanayama, 1) S. Okihara, 1) Y. Kitagawa, 4) O. Komeda, 5) T. Hioki, 5) T. Motohiro, 6) A. Sunahara, 7) Y. Sentoku, 8) E. Miura, 2) H. Sakagami, and 9) T. Jhozaki
27th IAEA Fusion Energy Conference 22 Oct 2018 IAEA
A laser-driven inertial fusion energy (IFE) reactor should achieve the fusion of injected fuel pellets, which are
continuously delivered into the reaction chamber and engaged by laser beams at 10’s Hz. To induce the fusion burn, injected
fuel pell...
Development status of shell target injection system for Inertial Confinement Fusion
MORI Yoshitaka
9 Sep 2018
Slow wave excitation using head-on two-color TW laser pulses toward plasma ion accelerator
Y. Mori and Y. Kitagawa
HEDS2018 23 Apr 2018
Present status of material modification using high-intense laser pulses ranging from nano-sec to femto-sec[Invited]
Y. Mori,1,* Y. Nishimura2, A. Sunahara3, K. Ishii1, R. Hanayama1, Y. Kitagawa1, T. Hioki4, H. Azuma5, T. Motohiro4, O. Komeda6, T. Sekine7, T. Takeuchi7, T. Watari7, T. Kurita7, H. Kimura7, K. Kabeya7, Y. Mizuta7, Y. Kato7, Y. Sentoku8, E. Miura9, A. Iwamoto10, H. Sakagami10, and T. Jhozaki11
LSC2018 23 Apr 2018
The mechanism of stripe pattern formation on the single-crystalline Yttria-Stabilized Zirconia by irradiationg ultra-intense laser pulse
Y. Mori, Y. Nishimura, A. Sunahara, Y. Kitagawa, K. Ishii, R. Hanayama, H. Azuma, T. Motohiro, T. Hioki, O. Komeda, T. Sekine, N. Satoh, T. Kurita, Y. Takeuchi, T. Kawashima, Y. Sentoku, and E. Miura
We discuss a generation of magnetic fields driven by counter-streaming fast electron flows in a
dense plasma. Counter-streaming fast electrons flows induce two-stream electromagnetic Weibel
instability with MG-class amplitude in an overlapping cur...
59th Annual Meeting of the APS Division of Plasma Physics 25 Oct 2017 APS
Fast ignition (FI) is a form of inertial confinement fusion in which the ignition step and the compression step are separate processes resulting in a reduction of the symmetry requirement for hot spot generation. One of the problems of FI so far a...
Hot electron generation by using circular/linear polarized ultra-intense lase pulse
Y. Mori, R. Hanayama, K.Ishii, Y. Kitagawa, A. Sunahara, Y. Sentoku, and T. Kawashima
10th International Conference on Inertial Fusion Sciences and Applications (IFSA2017) 11 Sep 2017
Ultra intense laser plasma interaction can produce a hot electron flow by v x B force in a direction of laser propagation. By using a circular polarized ultra-intense laser pulse, we can push the hot electrons without oscillations those are involv...
Y. Mori, Y. Nishimura, R. Hanayama, S. Nakayama, K. Ishii, Y. Kitagawa, T. Sekine, Y. Takeuchi, T. Kurita, Y. Kato, N. Satoh, N. Kurita, T. Kawashima, O. Komeda, T. Hioki, T. Motohiro, A. Sunahara, Y. Sentoku, E. Miura, A. Iwamoto, and H. Sakagami
EPS 44th Conference on Plasma Physics 29 Jun 2017 EPS
Fast Ignition (FI) is a method of heating an assembed high-density plasma into an ignition state
by using a relativistic electron beam produced form ultra-intense laser-matter interaction[1, 2].
To achieve a clear evidence of plasma heating, FI ex...
Y. Mori, K. Ishii, Y. Nishimura, R. Hanayama, Y. Kitagawa, T. Sekine, Y. Takeuchi, Y. Katoh, T.Kurita, N. Satoh, T. Kawashima, O. Komeda, T. Hioki, T. Motohiro, A. Sunahara, Y. Sentoku, and E. Miura
Targ3-Targetry for High Repetition Rate Laser-Driven Sources 23 Jun 2017 CLPU, Spain
The progress of the target injection system is reported, where deuterated polystyrene (CD) beads
are injected and engaged by heating laser beams at the repetition rate of 1 Hz delivered from
repetition ICF driver HAMA[1-4]. Since the high repetiti...
Neutron reactions and plasma heating by counter irradiating ultra-intense laser pulses
Y. MoriA, R. HanayamaA, S. NakayamaA, K.IshiiA, Y. KitagawaA, T. SekineB, Y. TakeuchiB,T. KuritaB, Y. KatoB, N. SatoB, N. KuritaB, T.KawashimaB, O. KomedaC, T. HiokiD, T. MotohiroD, Y. SentokuE, A. SunaharaF E. MiuraG, A. IwamotoH, and H. Sakagami
21 Mar 2017
円偏光超高強度レーザーによる高速電子発生と対向照射によるプラズマ加熱
平成28年度レーザープラズマ加速研究会 16 Jan 2017
Fast electron generation by tuning a polarization of ultra-high intense laser with a 1/4 wave plate
Y. Mori, Y. Nishimura, R. Hanayama, K. Ishii, Y. Kitagawa, A. Sunahara, Y. Sentoku, T. Kawashima
レーザー学会学術講演会第37回年次大会 9 Jan 2017
Mechanism of Two stream instability and generation of Weibel magnetic fields on fast heating with counterbeam configuration
Y. Mori, Y. Nishimura, R. Hanayama, S. Nakayama, K. Ishii, Y. Kitagawa, T. Sekine, Y. Takeuchi, T. Kurita, Y. Kato, N. Satoh, N. Kurita, T. Kawashima, T. Hioki, T. Motohiro, A. Sunahara, Y. Sentoku, E. Miura, A. Iwamoto, H. Sakagami
58th Annual Meeting of the APS Division of Plasma Physics 4 Nov 2016
We report fast heating of a shock-imploded core under counter beam configuration that published in recent [Y. MORI et al., Phys. Rev. Lett. 117, 055001 (2016)]. Experiments are performed by using a repetitive IFE driver HAMA [Y. MORI et al., Nucl....
Y. Mori, 1,2) Y. Nishimura, 1) R. Hanayama,1) S. Nakayama, 1) K. Ishii, and 1) Y. Kitagawa, 3) T. Sekine, 3) N.Sato, 3) T. Kurita, 3) T. Kawashima, 3) H. Kan,4) O. Komeda, 5) T. Nishi , 6) H. Azuma, 7) T. Hioki, 7) T. Motohiro, 8) A. Sunahara, 9) Y. Sentoku, and 10) E. Miura
26th IAEA Fusion Energy Conference (FEC) 17 Oct 2016 IAEA
Fast heating is a scheme to heat an imploded high density plasma into a hot state before the plasma hydro dynamically expands and dissolves. For a heating process driven by laser induced hot electron currents, the energy of hot electrons beyond Me...
Control of ultra-intense laser produced hot electron slop temperature by tuning its polarization
Y. Mori, Y. Nishimura, R. Hanayama, K.Ishii, Y. Kitagawa, A. Sunahara, Y. Sentoku, and T.Kawashima
13 Sep 2016
Physics of Fast heating of an imploded core under counter beam irradiation
Conference on Laser Energy Science (CLES2016) 19 May 2016
We report fast heating of a shock-imploded core under counter beam irradiation by using a repetitive IFE driver HAMA[1, 2]. Experiments results show that (i) a shock-imploded core with 70 μm diameter, originally deuterated polystyrene (CD) spheric...
対向照射型直接高速点火方式による圧縮コア加熱と Weibel不安定性による磁場形成
MORI Yoshitaka
レーザー研シンポジウム2016! 20 Apr 2016 大阪大学レーザーエネルギー学研究センター
Present status of counter irradiating fast heating scheme and generation of strong magnetic
Y. MoriA, Y. SentokuB, Y. NishimuraA, R. HanayamaA, S. NakayamaA, K.IshiiA, Y. KitagawaA, T. SekineC, T. KuritaC, N. SatoC, T.KawashimaC, H.KanC, T.NishiD, H.AzumaE, T. HiokiF , T. MotohiroF , A. SunaharaG and E.MiuraH
PRESENT STATUS OF COUNTER IRRADIATING DIRECT FAST HEATING
Y.Mori1, Y. Nishimura1, R.Hanayama1, K.Ishii1, S. Nakayama1, T.Sekine2, N.Sato2, T.Kurita2, T.Kawashima2, H.Kan2, A.Sunahara3, Y.Sentoku4, E. Miura5 , and Y.Kitagawa1
The 9th International Conference on Inertial Fusion Sciences and Applications (IFSA 2015) 23 Sep 2015
Present status of heating and fusion reaction simulation code for direct fast heating scheme
Y. MoriA, A. SunaharaB, Y. SentokuC, Y. NishimuraA, K.IshiiA, R. HanayamaA, Y. KitagawaA, T. SekineD, T. KuritaD, N. SatoD, T.KawashimaD, H.KanD, and E.MiuraE
16 Sep 2015
レーザー研究の動向
9 Jul 2015
Particle Acceleration for Industrial Application using a Table-top Femtosecond Beatwave Laser
Y. Kitagawa1, Y. Mori1, K. Ishii1, R. Hanayama1, Y. Nishimura1, 2, S. Nakayama1, T. Sekine3, T. Kurita3, N. Satoh3, T. Kawashima3, H. Kan3, O. Komeda4, T. Kondo4, M. Fujine4, H. Azuma5, T. Hioki5, T. Motohiro5, T. Nishi5, A. Sunahara6, E. Miura7, Y. Sentoku8 , Y. Arikawa9, T. Nagai9, Y. Abe9, Y. Sakawa9, S. Ozaki10, and A. Noda11
We report the present status of experiments that tailored pulses with 2.5 J/25 ns foot and 0.5 J/0.3 ns peak implode a
spherical shell target of 500 μm in diameter and 7 μm in thickness and sequence pulses with 0.4 J/150 fs direct heat this implod...
Y. Mori, Y. Nishimura, R. Hanayama, K. Ishii, K. Fujita, S. Okihara, Y. Kitagawa, T. Sekine, N. Satoh, T. Kurita, T. Takagi, M. Watari, T. Kawashima, H. Kan, A. Sunahara, Y. Sentoku, O. Komeda, N. Nakamura, T. Kondo, M. Fujine, H. Azuma, T. Motohiro, T. Hioki, M. Kakeno, E. Miura, Y. Arikawa,T. Nagai,Y. Abe, T. Ozaki, and A. Noda
25th IAEA Fusion Energy Conference 17 Oct 2014 IAEA
For inertial confinement fusion, the high-density compression and core heating are essential processes. National Ignition Facility (NIF) is a promising candidate for the development of a fusion power plant. However, a self-ignition scheme, that is...
13th International Workshop on Fast Ignition of Fusion Targets 17 Sep 2014 AWE, Scitech, ILE, IOP
Achievement of a controlled fusion burn by using a single-shot megajoule-class laser such as the National Ignition Facility is on-going. Following this scientific proof of ignition[1], engineering development needs to start on inertial fusion ener...
HAMAを用いたテーラードパルス対向爆縮加熱実験の現状
MORI Yoshitaka
Laser for new industries and Plasma accelerator workshop FY2013 in GPI 15 Jan 2014
Fast heating of imploded CD shell target by fast-heating fusion driver HAMA
1-Hz fast-heating fusion driver HAMA pumped by a 10-J green diode-pumped solid-state laser is applied for CD shell target implosion and heating. This presentation report the on-going CD shell fast heating experiments including target irradiation o...
Review of Laser-plasma Acceleration Research at GPI by using BEAT Laser[Invited]
Y. Mori, H. Kuwabara, S.Nakayama, R.Hanayama, K.Ishii and Y.Kitagawa
The 15th Takayanagi Kenjiro Memorial Symposium 13 Nov 2013 Research Institute of Electronics, Shizuoka University
The laser-driven plasma electron accelerator can drive an acceleration gradient over
GV/cm, which is 1000 times higher than that of conventional RF cavity achieved. In
this decade, this society experiences tremendous improvement in relation to the...
R e p e t i t i v e - m o d e c o u n t e r i r r a d i a t i n g f a s t - i g n i t i o n f u s i o n - p r e s e n t s t a t u s o f r e p e t i t i v e t a i l o r e d p u l s e i m p l o s i o n -
Y . M o r i , S . N a k a y a m a , R . H a n a y a m a A , K . I s h i i, S . O k i h a r a, K . F u j i t a, Y . K i t a g a w a, T . S e k i n e, T . K u r i t a, N . S a t o h, T . K a w a s h i m a, H . K a n, O . K o m e d a, N . N a k a m u r a, T . K o n d o, M . F u j i n e, M . K a k e n o, H . A z u m a, T . H i o k i, T . M o t o h i r o, Y . N i s h i m u r a, A . S u n a h a r a, Y . S e n t o k u, a n d E . M i u r a
JPS 2013 Fall meetings 25 Sep 2013 The Physical Society of Japan
The Eighth International Conference on Inertial Fusion Sciences and Applications (IFSA 2013) 8 Sep 2013 ILE
Successful 1.85 MJ laser irradiation conducted by National Ignition Facility (NIF) in 2012, achievement of a controlled fusion burn and gain using the single-shot mega-joule class laser is within a scope. Following an effort of this scientific pro...
Heating model of direct irradiating fast heating scheme including hot electrons and inward accelerated ions
Y. Mori, O. Komeda, K. Ishii, R. Hanayama, K. Fujita, S. Okihara, Y. Kitagawa, T. Sekine, N. Satoh, T. Kurita, T. Kawashima, H. Kan, N. Nakamura, T. Kondo, M. Fujine, Y. Nishimura, H. Azuma, T. Motohiro, T. Hioki, M. Kakeno, A. Sunahara, Y. Sentoku, E. MIURA, Y. Arikawa, T. Nagai and Y. Abe
29 Jan 2013
DPSSL-pumped Laser System HAMA for High-repetitive Counter Irradiation Fast Heating Fusion Demonstration
Y. Mori, O. Komeda, K. Ishii, R. Hanayama, K. Fujita, S. Okihara, Y. Kitagawa, T. Sekine, T.Kurita, N. Satoh, T. Kawashima, H. Kan, N. Nakamura, T. Kondo, M. Fujine, M. Kakeno, H.Azuma, T. Hioki, T. Motohiro, Y. Nishimura, A. Sunahara, Y. Sentoku, E. Miura
28 Nov 2012
Fusion from fast hating of a compactly imploded CD core using DPPSL-pumped High-Repetition-Rate Laser
Y. Mori, O. Komeda, K. Ishii, R. Hanayama, K. Fujita, S. Okihara, Y. Kitagawa, T. Sekine, N. Satoh, T. Kurita, T. Kawashima, H. Kan, N. Nakamura, T. Kondo, M. Fujine, H. Azuma, T. Hioki, M. Kakeno, T. Motohiro, Y. Nishimura, A. Sunahara and Y. Sentoku
12th International Workshop on Fast Ignition of Fusion Targets 5 Nov 2012
The achievement of controlled fusion burn and gain with single-shot mega-joule-class laser such as National Ignition Facility (NIF) is on going. Following this scientific proof of ignition, inertial fusion energy (IFE) needs to start engineering d...
10-J Green DPSSL-pumped Laser System HAMA for High-repetitive Counter Irradiation Fast Heating Fusion Demonstration
Y. Mori, O. Komeda, K. Ishii, R. Hanayama, K. Fujita, S. Okihara, Y. Kitagawa, T. Sekine, N. Satoh, T. Kurita, T. Kawashima, H. Kan, N. Nakamura, T. Kondo, M. Fujine, H. Azuma, T. Hioki, M. Kakeno, T. Motohiro, Y. Nishimura, A. Sunahara, and Y. Sentoku
24th IAEA Fusion Energy Conference 11 Oct 2012 IAEA
A DPSSL-pumped laser HAMA is developed to realize high-repetitive ICF experiment. To demonstrate a counter irradiation fast heating fusion scheme, amplied chirped pulse of 4J/0.4ns is divided into four beams, two for imploding and the others for h...
Inverse Compton Scattering by Laser Accelerated Electrons and its Application to Standoff Detection of Hidden Objects V
The characteristics of inverse Compton scattering X-rays from laser-accelerated electron bunches are
presented. We review several experimental results recent obtained and compared them with the theory
predicted. A combination of femtosecond electr...
Hi-rep. Counter-illumination Fast Ignition Scheme Fusion
Y. Kitagawa, Y. Mori(Co-organized), O. Komeda, K. Ishii, R. Hanayama, K. Fujita, S. Okihara, T. Sekine, N. Sato, T. Kurita, T. Kawashima, H. Kan, N. Nakamura, T. Kondo, M. Fujine, H. Azuma, T. Motohiro, T. Hioki, M. Kakeno, Y. Nishimura, A. Sunahara, Y. Sentoku
Conference on Inertial Fusion Energy ’12 26 Apr 2012
Counter irradiation of sequential implosion and heating laser beams from HAMA to realize compact fast heating of laser fusion
Y. Mori, O. Komeda, K. Ishii, R. Hanayama, K. Fujita, S. Okihara, Y. Kitagawa, T. Sekine, N. Satoh, T. Kurita, T. Kawashima, H. Kan, N. Nakamura, T. Kondo, M. Fujine, H. Azuma, T. Motohiro, T. Hioki, Y. Nishimura, A. Sunahara, Y. Sentoku
1 Feb 2012
Inverse Compton Scattering from Laser accelerated electrons and its application for Stand-off Detection III
51st Annual Meeting of the APS Division of Plasma Physics 3 Nov 2009 APS DPP
The progress of the laser accelerator shows us the possible applications to the industries, such as an inspection source for soft materials like as human bodies, plants foods and medicines. The inverse Compton scattering will realize such a novel ...
We developed a double-line Titan saphire beat laser. The laser enebales exteranal wake field excitations by a beat wave scheme. The resulting wake amplitude was 11 GV/m in the electron density of 2 x 10^18 cm^-3. In order to accelerates electrons,...
48th Annual Meeting of the Division of Plasma Physics 3 Nov 2006 APS
The low density laser electron acceleration was examined for a conical-guiding glass capillary target with sub ps pulse duration 200 TW laser system toward electron energy gain improvement. Dedicated experiments reveals that conical-tip glass capi...
レーザー加速のためのビート波プラズマ制御
MORI Yoshitaka
高エネルギー密度科学とプラズマフォトニクス研究会 2 Oct 2006
25aQB-6 Electron Acceleration using an Ultra-short Pulse Beat Wave Laser II
Yoshitaka MORI, Yoneyoshi Kitagawa, Kiminori Kondo, and Yasuhiko Sentoku
5th Japan-US workshop on High Irradiance Laser and Plasma Diagnostic Technologies & 4th workshop on Laser Acceleration 8 Feb 2006
超短パルスビート波レーザー電子加速の展望
MORI Yoshitaka
光エネルギー産業創成研究会 17 Jan 2006 光産業創成大学院大学
電子&プラズマ加速
MORI Yoshitaka
2005レーザー研年末発表 26 Dec 2005 阪大レーザー研
Present status of table-top short-pulse beat wave electron acceleration laser system
MORI Yoshitaka, FUKUMOCHI Syuhji, HAMA Yoshikazu, KONDO Kiminori and KITAGAWA Yoneyoshi
ICFA 38th Advanced Beam Dynamics And 9th Advanced & Novel Accelerators Joint Workshop On Laser-Beam Interactions And Laser And Plasma Accelerators (4th LBI Workshop And 7th LPA Workshop Jointly Held In Celebrating The Year Of Phys.) 15 Dec 2005
Laser plasma electron accelerators require a longitudinal electric field of the plasma wave oscillation driven by the ponderomotive force of the relativistic- intense laser. In order to produce such oscillations, several methods have been reported...
SPring-8 ビーム物理研究会 2005 14 Nov 2005 SPring-8 高輝度光科学研究センター
テーブルトップビート波電子加速システムの開発
MORI Yoshitaka
「新型プラズマ電磁波源によるプラズマ航跡場診断」に関する研究会 30 Aug 2005
Table-top beat-wave electron acceleration system development status
Y. Mori, S. Fukumochi, H. Okabe, T. Ishikura, Y. Hama, K. Kondo and Y. Kitagawa
19th International Conference on Numerical Simulation of Plasmas (ICNSP) and 7th Asia Pacific Plasma Theory Conference (APPTC) 13 Jul 2005
To realize a laser-plasma electron accelerator, an ultra-intense laser must drive a high field plasma wave. The beat-wave laser had first demonstrated the laser can accelerate the electrons to above 20 MeV through a relativistic plasma wave. It ...
Capillary and Gas-Jet Electron Acceleration with PW Laser
Y. Mori, Y. Kitagawa, S. Fukumochi, H. Okabe, K. Kondo,T. Ishikura, S. Morita, M. Kashihara, T. Yabuuchi, R. Kodama, K. A. Tanaka, Y. Izawa, E. Miura, and Y. Sentoku
14th INTERNATIONAL LASER PHYSICS WORKSHOP (LPHYS'05) 5 Jul 2005
The laser-plasma acceleration is capable of producing extremely high electric field and the maximum electron energy reaches around 300 MeV. In order to increase electron energy, toward GeV, extension of the acceleration length is the key issue. Ho...
Y. MORI , R. H. GOULDING, M. D. CARTER, F. W. BAITY JR, D. O. SPARKS
45th Annual Meeting of the APS Division of Plasma Physics 30 Oct 2003 APS DPP
Helicon plasma sources are used for many applications requiring high-density plasma including plasma processing and fusion component testing. Light ion helicon operation is more sensitive to magnetic field strength and geometry than heavy ions. In...
44th Annual Meeting of the Division of Plasma Physics 11 Nov 2002 APS DPP
Helicon plasma source is a well-known high-density plasma source for many applications including plasma processing and fusion. However, most helicon research has been focused on a uniform static magnetic field and relatively heavy ions. Light ion ...
MORI Y., TAKAO Y., UEMURA K.. GOUDA T., MIYAMOTO T., ESAKI T., MAEYAMA T.. MURANAKA T. and NAKASHIMA H.
2000 International congress on plasma physics (ICPP-2000)/42nd Annual Meeting of the APS Division of Plasma Physics 25 Oct 2000
A study is being made on an electric propulsion system (EICR Plasma Thruster) which can generate plasma with ECRH (Electron Cyclotron Resonance Heating), accelerate ions with ICRFH (Ion Cyclotron Range of Frequency Heating) via antenna, and adopts...
ICRF Wave Propagation and Absorption in a Microwave Discharge Ion thruster
Y. Mori, T. Noutsuka, Y. Takao, and H. Nakashima
International conference on Open Magnetic Systems for Plasma Confinement (Open Systems 2000) 5 Jul 2000
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(若手研究(B))
Project Year: 2008 - 2009 Investigator(s): Yoshitaka MORI
In order to demonstrate new principle of an ion accelerator, I applied experimental investigation for laser plasma ion acceleration. In detail, I examined slow wave excitation driven by double-line beat laser. When the laser was focused into the g...
Experimental Research on Grid less plasma propulsion system
