Kenji Motohashi

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Name
Kenji Motohashi
Affiliation
Toyo University
Section
Faculty of Science and Engineering
Job title
Assistant Professor

Research Areas

 
 

Education

 
 
 - 
1991
Graduate School, Division of Engineering, Tokyo University of Agriculture and Technology
 
 
 - 
1989
Faculty of Engineering, Tokyo University of Agriculture and Technology
 

Committee Memberships

 
2003
   
 
The Physical Society of Japan  
 
2007
   
 
Japanese Society of Atomic Collisions  
 
2002
   
 
Japanese Society of Atomic Collisions  
 

Published Papers

 
A homework of time period measurement of physical pendulum to enhance the understanding of the concept of moment of inertia
Kenji Motohashi
Journal of Education Career Center   1(1) 27-32   Mar 2019   [Refereed]
Kenji Motohashi, Tomoki Tachikawa, Takashi Uchida, and Kensei Kawamura
e-J. Surf. Sci. Nanotech.   16 127-131   May 2018   [Refereed]
In this study, we performed a mass-spectrometric study of cluster ions scattered on glass surfaces covered with ferrocene molecules under the incidence of 4.8 keV‒C60q+ (q = 1 and 2) ions. A couple of optical flats covered with 11-ferrocenyl-1-und...
Kenji Motohashi, Nobumasa Miyawaki, Yuichi Saitoh, Kazumasa Narumi, and Shiro Matoba
Japanese Journal of Applied Physics   56 046301-1-046301-6   Mar 2017   [Refereed]
To investigate how the initial charge state affects the transmission of 4-MeV-C+ and -C4+ ion beams through a channel, we measured the transmission probability and kinetic energy of atoms and ions that pass through a cylindrical channel in glass, ...
Keisuke Nogami, Yasuhiro Sakai, Shota Mineta, Daiji Kato, Izumi Murakami, Takahiro Kenmotsu, Kenji Furuya, and Kenji Motohashi
Journal of Vacuum Science and Technology A   33(6) 061602-1-061602-7   Aug 2015   [Refereed]
Visible emission spectra were acquired from neutral atoms sputtered by 35–60 keV Krþ ions from a
polycrystalline tungsten surface. Mean velocities of excited tungsten atoms in seven different 6p
states were also obtained via the dependence of phot...

Misc

 
Guiding of slow multiply charged C60 and Ar ion beams using cylindrical glass channel
Kenji Motohashi
Achievements in the bio-nano innovation programme   2016-2018 145-148   Apr 2019   [Invited]
Development of nano robotics: Application of nano robots to biomedical and environmental studies
K. Motohashi, N. Miyawaki, K. Narumi and Y. Saitoh
QST Takasaki Annual Report 2017   QST-M-16 134-134   Mar 2019   [Refereed][Invited]
We have been developing the cylindrical glass channel (CGC), which comprises a cylindrically concave glass lens and a cylindrically convex glass lens facing each other with a gap of 1.2 mm. The transmission probability and the kinetic energy of ou...
Transmission Properties of a 6-MeV Fullerene Ion Beam through a Wedge-shaped Glass Channel
Kenji Motohashi, Nobumasa Miyawaki, Yuichi Saitoh, Kazumasa Narumi
QST Takasaki Annual Report 2016   QST-M-8 151-151   Mar 2018   [Refereed]
Kenji Motohashi, Yuichi Saitoh, Nobumasa Miyawaki, Kazumasa Narumi
QST Takasaki Annual Report 2015   QST-M-2 182-182   Mar 2017   [Refereed][Invited]
The influence of initial charge states of 4-MeV ion beams on guiding effects were investigated by comparing C4+ with C+. The results obtained in this study is essentially means that the guiding effect was indeed in play under this investigative sc...
Kinetic Energy Distribution of 4-MeV-C4+ Ions
Kenji Motohashi, Yuichi Saito, Nobumasa Miyawaki, and Shiro Matoba
JAEA Review   2015-022 131-131   Feb 2016   [Refereed][Invited]
Kenji Motohashi
e-J. Surf. Sci. Nanotech.   7 21-24   2009
K. Motohashi, K. Hosoya, M. Imano, S. Tsurubuchi, and A. Koukitu
Surface Science   601 5304-5308   2007
Kenji Motohashi and Seiji Tsurubuchi
Nuclear Instruments and methods in Physics Research B   264(1) 15-22   2007
HIghly Charged Ions - Atoms, Molecules and Solid Surfaces
Kenji Motohashi
Journal of Plasma and Fusion Research   83(8) 665-670   2007
Kenji Motohashi, Seiji Tsurubuchi, and Akinori Koukitu
J. Phys.: Conference Series   80 012015   2007
Report on Cross Section Data Compilation for Electron and Ion Collisions with Molecules of Hydrogen Isotopes, Nitrogen, Oxygen, Hydrocarbons, Water and Carbon Oxide
M. Kimura, A. Igarashi, M. Imai, Y. Itikawa, M. Kitajima, T. Kusakabe, K. Moribayashi, T. Morishita, K. Motohashi, L. Pichl, R. Suzuki, D. Kato, I. Murakami, T. kato, and M. Kato
National Institute for Fusion Science Research Report   NIFS-DATA-98 1-38   2006
High-efficiency and low-damage analysis of solid surfaces by use of highly-charged ions
K. Motohashi, S. tsurubuchi, and A. Koukitu
The 21st Century COE program on "Future Nano-Material" News Letter   4 18-19   2006
Kenji Motohashi, Seiji Tsurubuchi, Akinori Koukitu
Nuclear Instruments and Methods in Physics Research B   232(1-4) 254-260   2005
Kenji Motohashi, Seiji Tsurubuchi
Journal of Physics B: Atomic, Molecular and Optical Physics   38(18) 3339-3348   2005
A new method for analysis and modification of wide-gap semiconductor surfaces by using highly-charged ions
K. Motohashi, S. Tsurubuchi, and A. Koukitu
The 21st Century COE program on "Future Nano-Material" News Letter   3 37   2005
Fundamental study on atomic structure of compound semiconductor surfaces by highly charged ions
Seiji Tsurubuchi, Kenji Motohashi and Akinori Koukitu
64-65   2004
Fundamental Study on Atomic Structure of Compound Semiconductor Surfaces
Seiji Tsurubuchi, Kenji Motohashi and Akinori Koukitu
News Letter: The 21st Century COE (center of Excellence) program on "Future Nano-Material"   2 6-7   2004
A fundamental study on the sputtering processes of wide-gap semiconductors by highly-charged-ion impact
Kenji Motohashi and Seiji Tsurubuchi
News Letter: The 21st Century COE (Center of Excellence) program on "Future Nano-Material"   22-23   2004
A fundamental study on the sputtering processes of wide-gap semiconductors by highly-charged-ion impact
Kenji Motohashi and Seiji Tsurubuchi
22-23   2004
Momentum-imaging spectroscopy of fragment ions in excitation of molecules by electron impact
Y. Yamaguchi, Y. Iriki, K. Motohashi and S. Tsurubuchi
Atomic Collision Research in Japan -Progress Report-   29 8   2003
3D-momentum images of sputtered ions from a SiC surface interacted with highly-charged Ar ions
K. Motohashi, K. Hosoya, M. Tanaka and S. Tsurubuchi
Atomic Collision Research in Japan -Progress report-   29 31-32   2003
Seiji Tsurubuchi and Kenji Motohashi
Institute of Physics Publishing・Journal of Physics B: Atomic, Molecular and Optical Physics   36(18) 3847-3863   2003
Kenji Motohashi and Seiji Tsurubuchi
Institute of Physics Publishing・Journal of Physics B: Atomic, Molecular and Optical Physics   36(9) 1811-1833   2003
3D-momentum imaging of fragment ions of CF4/ CH4 characterized by energy-gain of incident Arq+ ions
Kenji Motohashi and Seiji Tsurubuchi
The fifth Asian International Seminar on Atomic and Molecular Physics -Scientific Program and Book of Abstracts-   187-188   2002
AMDIS and CHART update (I)
I. Murakami, T. Kato, A. Igarashi, M. Imai, Y. Itikawa, D. Kato, M. Kimura, T. Kusakabe, K. Moribayashi, T. Morishita, K. Motohashi, and L. Pichl
National Institute for Fusion Science・RESEARCH REPORT NIFS-DATA Series   70 1-102   2002
Momentum Imaging Spectroscopy for Fragment Ions Produced in Single-Electron Transfer of Arq++N2/ CF4/ CH4 (q=8-11) Collision
K. Motohashi and S. Tsurubuchi
22th International Conference on Photonic, Electronic, and Atomic Collisions =Abstracts of Contributed papers-   567   2001
Review of Scientific Instruments   71(2,Pt.2) 687-689   2000
Review of Scientific Instruments   71(2,Pt.2) 890-892   2000
Journal of physcs B: Atomic,. Molecular and Optical Physics   33(18) 3713-3723   2000
Journal of Physics B   33(22) 5215-5224   2000
Emission Cross Section for CH+ Produced by Electron Impact of CH4
Kenji Motohashi and Seiji Tsurubuchi
International Symposium on Electron-Molecule Collisions and swarms -Program and Abstracts-   145-146   1999
Kenji Motohashi, Seiji Tsurubuchi
Journal of the Physical Society of Japan   68(1) 64-70   1999
M1-Transitions of Ti-like Highly Charged Ions.
Physica Scripta   T80 446   1999
Development of a Compact EBIT with NdFeB Permanent Magnets.
K. Motohashi, A. Moriya, H. Yamada and S. Tsurubuchi
21st International Conference on the Physics of Electronic and Atomic Collisions, Abstract   2 743   1999
A Compact EBIT With NdFeB Permanent Magnets.
The 8th International Conference on Ion Sources, Abstract   P081   1999
Development of a compact EBIT using NdFeB permanent magnets
Atomic Collision Research in Japan   25 99   1999
Recent activities at the Tokyo Electron Beam Ion Trap
Atomic Collision Research in Japan   25 104-106   1999
Review of Scientific Instrument   69(2 Pt.2) 694-696   1998
Emission cross sections for hydroden Lyman-α and-β produced in He+/Ar++H2 collisions.
Atomic Collision Research in Japan   24 65   1998
Emission cross section for hydrogen Lyman-α and-β produced in H-+Rg(He, Ne, Ar and Kr)collisions.
Atomic Collision Research in Japan   24 66   1998
The Tokyo Electron-Beam Ion Trap Experimental Program
S. Ohtani, J. Asada, T. Fukami, H. Hirayama, K. Motohashi, N. Nakamura, E. Nojikawa, K. Okazaki, H. Shiraishi, M. Sakurai, N. Tada, S. Tsurubuchi and H. Watanabe
20th International Conference on the Physics of Electronic and Atomic Collisions -Abstracts of Contributed Papers-   2 MO159   1997
Electron-Impact Emission Cross sections for the Resonance Lines of Ne
Atomic Colission Research In Japan   23 8   1997
Emission Cross Sections for Fragment Species Produced in He+H2 and in He+CH4
Atomic Collision Research in Japan   23 33-34   1997
Recent Progress of the Tokyo-Electron Beam Ion Trap
Atomic Collision Research In Japan   23 49-50   1997
Physica Scripta   (T73) 365-367   1997
Physica Scripta   (T73) 362-364   1997
X-ray Spectroscopy at the Tokyo EBIT Facility
Physica Scripta   T73 90-92   1997
Physica Scripta   (T73) 371-372   1997
Physica Scripta   (T73) 368-370   1997
Optical Emission Spectroscopy of Sputtered Al Atom From Al and Al2O3 Surfaces Interacted with Arq+(q=1-9)
Physica Scripta   T73 329-331   1997
Journal of the Physical Society of Japan   66(12) 3795-3800   1997
Emission Cross Sections for the Fragment Species in He++CH4 Collision
K. Motohashi and S. Tsurubuchi
20th International Conference on The Physics of Electronic and Atomic Collisions -Abstracts of Contributed Papers-   1 WE183   1997
Journal of Physics B : Atomic, Molecular and Optical Physics   29(9) 1785-1801   1996
Emission cross sections for hydrogen and helium atoms produced by He++CH4 collision
Atomic Collision Research in Japan   22 41   1996
Mean velocity of sputtered Al atoms from Al and Al2O3 surfaces by Ar+ bombardment
Atomic Collision Research in Japan   22 67   1996
Emission cross sections for fragment species in dissociative excitation of CH4 by electron impact(共著)
19th International Conference on the Physics of Electronic and Atomic Collisions, Abstract   1 422   1995
Electron-impact emission cross sections of the resonance line of Ar(共著)
19th International Conference on the Physics of Electronic and Atomic Collisions, Abstract   1 489   1995
Emission cross sections for hydrogen Lyman α produced from He++CH4
21 25-26   1995
EMISSION CROSS SECTIONS FOR EXCITED FRAGMENTS PRODUCED BY ELECTRON IMPACT OF CH4
ATOMIC COLLISION RESEARCH IN JAPAN   20 20   1994
DOPPLER LINE PROFILE OF SPUTTERED Al ATOMS FROM Al AND Al2O3 SURFACES(共著)
ATOMIC COLLISION RESEARCH IN JAPAN   20 58   1994
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   63(11) 3996   1994
Rotational and vibrational temperatures of excited CH radical by electron impact on CH4
Atomic Collision Research in Japan Progress Report   19 11   1993
Emission cross sections for the 5P→4S transition of Ar by electron impact (共著)
Atomic Collision Research in Japan Progress Report   19 10   1993

Books etc

 
ISSP10 Proceedings of the 10th ISSP International Symposium on Nanoscience at Surfaces
ELSEVIER   2007   ISBN:0039-6028
INELASTIC ION-SURFACE COLLISIONS
ELSEVIER   2005   ISBN:0168-583X
CORRELATIONS, POLARIZATION, AND IONIZATION IN ATOMIC SYSTEMS
AMERICAN INSTITUTE OF PHYSICS   2002   ISBN:0-7354-0048-2

Conference Activities & Talks

 
Kounosuke Muro, Kazuhiro Usui, Tatsuya Ono, Kazunori Kato, Kenji Motohashi
The 66th JSAP Spring Meeting, 2019   9 Mar 2019   The Japan Society of Applied Physics
Evaluation of guide effect for fullerene ion beam and argon ion beam using cylindrical glass channel
Kenji Motohashi
ECRIS meeting   26 Dec 2018   
Guiding of 7.5 keV Ar3+ ion beam and focusing of 4 MeV C4+ ion beam using cylindrical glass channel [Invited]
Kenji Motohashi
TMU Symposium on Physics of Highly Charged Ions 2018   16 Dec 2018   
Guiding of Ar3+ (7.5 keV) ion beam using cylindrical glass channel (CGC) was successfully observed. Small deflection due to tilt of the CGC was observed. Kinetic energy of transmitted ions almost preserved the initial energy. Ion transmission prob...
Kenji Motohashi, Shu Ishii, Kosuke Aoki, Naoya Tsuruta, and Shoutaro Kamon
43rd Annual Conference of the Atomic Collision Society og Japan   12 Oct 2018   The Atomic Collision Society of Japan
"Ion beam guiding effect" in which a low-energy multiply charged ion beam travels in a capillary tube and a bent tube by charging has been attracting attention. In order to investigate the effect of different shapes of concave and convex on the gu...
Kounosuke Muro, Kazunori Kato, and Kenji Motohashi
43rd Annual Conference of the Atomic Collision Society og Japan   12 Oct 2018   The Atomic Collision Society of Japan
In order to investigate the effect of the plasma activated medium (PAM), we examined the plasma irradiation time dependence of the PAM and the time (effective time) during which the effect was sustained. Furthermore, in order to investigate whethe...
Kenji Motohashi, Shu Ishii, and Kosuke Aoki
The Physical Society of Japan 2018 Autumn Meeting   11 Sep 2018   The Physical Society of Japan
The ion-beam guiding, that is the transmission of low energy multi-charge ions in some tapered or curved insulator capillaries due to electric charging, have been received much attention. However, influence of the effect on shape of the inner wall...
In situ mass analysis of scattered particles in collisions between ions and thiol self-assembled monolayer surfaces terminated with ferrocene
Kensei Kawamura, Muneo Osumi, Kenji Motohashi
The 15th International Symposium on Bioscience and Nanotechnology   1 Dec 2017   Bio-nano Electronics Research Centre, Toyo University
We conducted an in-situ mass spectrometry of atoms or molecules scattered on glass surfaces covered with ferrocene in the presence of energetic Xe or C60 fullerene ions to investigate their inelastic processes involving rearrangement or encapsulat...
Kenji Motohashi, , Tomoki Tachikawa, Takashi Uchida
The 8th International Symposiumu on Surface Science   23 Oct 2017   The Surface Science Society of Japan
We performed a mass-spectrometric study of cluster ions scattered on solid surfaces covered with ferrocene molecules in the presence of 4.8keV‒C60q+ (q = 1 and 2) ions to investigate their encapsulation process. This study aims to develop a novel ...
Spectroscopic studies on atomic excited state formation in sputtering induced by ion-beam bombardment on tungsten surfaces
D. Kato, H.A. Sakaue, Y. Sakai, T. Kenmotsu, k. Furuya, M. Sakamoto and K. Motohashi
16th International Conference on Plasma-Facing Materials and Components for Fusion Applications   16 May 2017   Institute of Energy and Climate Research
Excited state formations in sputtered tungsten atoms by 35-60 keV Kr+ ion-beam bombardment on polycrystalline tungsten are investigated based on emission lines of the atoms in excited states above the surface. Mean velocities of the excited atoms ...
Mass analyses of clusters exit from ion channels covered with ferrocene in incidence of C60 ions
T. Tachikawa, T. Uchida, and K. Motohashi
The 64th JSAP Spring Meeting, 2017   16 Mar 2017   The Japan Society of Applied Physics
Transmission properties of low energy multicharge ion beam entering the gap between a pair of optical lenses
Syu Ishii, Yukihito Mase, Kenji Motohashi
The 64th JSPS Spring meeting, 2017   15 Mar 2017   The Japan Society of Applied Physics
Influence of atmospheric pressure helium plasma irradiation on skin cancer cells and esophageal cancer cells
Yusuke Ueno, Koichiro Hirasawa, Kazunori Kato, Kenji Motohashi
The 64th JSAP Spring Meeting, 2017   14 Mar 2017   The Japan Society of Applied Physics
The energy distributions of 4MeV-Cq+ ions (q=1,4) guided by a cylindrical glass channel
K. Motohashi, Y. Saito, N. Miyawaki, and K. Narumi
The 1st QST Takasaki Laboratory Symposium   26 Jan 2017   National Institutes for Quantum and Radiological Science and Technology
Transmission propertiies of low energy multi-charge ion beam entering the gap between a pair of optical lenses
Kenji Motohashi
The Annual Meeting of The Atomic Collision Society   11 Dec 2016   The Atomic Collision Society
When Ar3+ ion beam entered the gap between a pair of cylindrical glass lenses and the gap between a pair of flat aluminum optical mirrors, we measured the charge state, energy, and the observation angle of the transmitted ions. We found the guidin...
Development of a atomospheric pressure plasma reaction analizer and the preliminaly results
Yusuke Ueno, Ko-ichirou Hirasawa and Kenji Motohashi
The 41th Annual Meeting of The Atomic Collision Society   11 Dec 2016   The Atomic Collision Society
We have been developing an analizer of plasma induced reaction of living cancer cells. Preliminary results of optical emission spectra, pH, and electric conductivity were measured during the atomospheric plasma irradiation on the esophagus cancer ...
Space distribution and polarizability of optical emission on the surface irradiated with ions
H. A. Sakaue, D. kato, I. Murakami, S. Mineta, K. Lee, Y. Sakai, K. Furuya, T. Kenmotsu, K. Motohashi
The 41th Annual Meeting of The Atomic Collision Society of Japan   10 Dec 2016   The Atomic Collision Society of Japan
We observed optical spectra of Balmer series emitted from hydrogen atoms scattered on a tungsten surface in incidence of 35 keV-proton beam. The spacial distributions of emission intensity and polarizability of the Balmer alpha line spectrum were ...
C60 ion scattering on a thiol self assembled monolayer surface terminated with ferrocene
Kenji Motohashi, Tomoki Tachikawa, and Takashi Uchida
The 41th Annual Meeting of the Atomic Collision Society of Japan   10 Dec 2016   The Atomic Collision Society of Japan
We conducted mass spectroscopy of molecules scattered on solid surfaces covered with ferrocene molecules in the presence of energetic C60 fullerene ions to investigate their encapsulation process. We successfully measured the charge-state-specific...
Mas spectroscopy of fullerene ions scattered on glass surfaces covered with ferrocene molecules
Kenji Motohashi, Tomoki Tachikawa, and Takashi Uchida
The 14th International Symposium on Bioscience and Nanotechnology   24 Nov 2016   Bio-Nano Electronics Research Center
We conducted mass spectroscopy of molecules scattered on solid surfaces covered with ferrocene molecules in the presence of energetic C60 fullerene ions to investigate their encapsulation process. It is expected that Fe@C60 molecular ions exit a c...
4.8keV-C60 ion scattering II on a ferrocene terminated thiol self assembled monolayer surface
Kenji Motohashi
2016 Autumn Meeting of the Physical Society of Japan   14 Sep 2016   The Physical Society of Japan
We conducted mass spectroscopy of molecules scattered on solid surfaces covered with ferrocene molecules in the presence of energetic C60 fullerene ions to investigate their encapsulation process. It is expected that Fe@C60 molecular ions exit a t...
Sputtering with slow highly charged ions under glancing incidence
The 8th Asian International Seminar on Atomic and Molecular Physics   2008   
Fragmentation and desorption in low-energy highly charged ion collisions with molecules and surfaces
14th International Conference on the Physics of Highly Charged Ions   2008   
Optical emission spectroscopy of excited atoms sputtered on a Ti surface under irradiation with multicharge Ar ions
The 14th International Conference on the Physics of Highly Charged Ions   2008   
Secondary-ion emission from GaN(0001) and dodecanethiol/Au(111) surfaces irradiated with Arq+ (q=3-6) at glancing angle
The 14th International Conference on the Physics of Highly Charged ions   2008   
Surface chemical analysis by multicharge-ion induced desorption
The 10th Asia Pacific Physics Conference   2007   
Secondary ion emission in grazing collisions between highly-charged ions and surfaces -Coincidence experiments with scattered particles-
7th Asian International Seminar on Atomic and Molecular Physics   2006   
Analyses of compound-semiconductor surfaces by highly-charged ions
The University of Tokyo International Sympojium and the tenth ISSP International Sympojium on Nanoscience at Surfaces   2006   
Momentum-imaging spectroscopy of secondary ions from GaN and SiC surfaces collided with highly-charged ions at grazing angle
15th International Workshop on Inelastic Ion - Surface Collisions   2004   

Works

 
National Institute for Fusion Science Atomic and molecular Databese Working Group

Research Grants & Projects

 
Study on molecular dissociation by highly-charged-ion impact
Project Year: 2001 - 2004
Potential sputtering of wide-band-gap semiconductors interacted with slow highly-charged ions
Project Year: 2002   
Study on molecular dissociation by electron impact
Project Year: 1993   
Spectroscopic study on Coulomb explosion of non-conductive surface by multiple charged ions
Study on the dissociation process of molecules by multiply charged ion impact