Faculty Information, Institute for Chemical Research, Kyoto University   [ English | Japanese ]


IWASHITA, Yoshihisa

Advanced Research Center for Beam Science - Particle Beam Science -
Associate Professor
Doctor Science
URL:
E-mail: iwashita@kyticr.kuicr.kyoto-u.ac.jp
Tel: 0774-38-3282
Fax: 0774-38-3289
Academic career
    1977.3 Graduated from Ms. Course, Kyoto University
    1994.9 D. Sc., Kyoto University
    1981.2-1998.6 Assistant Professor, Kyoto University
    1998.7- Associate Professor, Kyoto University
Research field
    Beam Physics, Electromagnetic dynamics
Current research
  1. Secondary beam science (Phase Rotated Intense Slow Muons-PRISM, Neutrino Factory, Laser Ion Source)
  2. Electromagnetic dynamics, Microwave science and High gradient cavity
  3. Super strong permanent magnet and its application
Selected publications
  1. Y. Arimoto, T. Yoshioka, H.M. Shimizu, K. Mishima, T. Ino, K. Taketani, S. Muto, M. Kitaguchi, S. Imajo, Y.Iwashita, S. Yamashita, Y. Kamiya, A. Yoshimi, K. Asahi, T. Shima, K. Sakai, Longitudinal-gradient magnet for time focusing of ultra-cold neutrons Physics Procedia 17, 20-29 (2011)
  2. M. Yamada, Y.Iwashita, T. Kanaya, N. L. Yamada, H. M. Shimizu, K. Mishima, M. Hino, M. Kitaguchi, K. Hirota, P. Geltenbort, B. Guerard, G. Manzin, K. Andersen, J. Lal, J. M. Carpenter, M. Bleuel, S. J. Kennedy, A compact TOF-SANS using focusing lens and very cold neutrons Physica B: Condensed Matter 406, 12, 2453-2457 (June 2011)
  3. Y.Iwashita, T. Nagae, T. Tanimori, H. Fujioka, H.M. Shimizu, Satellite pulsed tiny neutron source at Kyoto University, Sakyo NIM-A 634, S97-S99 (2011)
  4. H.M.Shimizu, Y.Iwashita, M.Kitaguchi, K.Mishima and T.Yoshioka, A Tranport Optics for Pulsed Ultracold Neutrons NIM-A 634, S25-S27 (2011)
  5. Y.Iwashita, M. Ichikawa, M. Yamada, T. Sugimoto, H. Tongu, H. Fujisawa, M. Masuzawa, T. Tauchi, T. Oku, K. Hirota, H. M. Shimizu, Caitu Shi, and Y. Zhu, Practical Applications of Permanent Magnet Multipoles IEEE Trans. on Applied Supercond 20, 842-845 (2010)
  6. P. Bambade, M. Alabau Pons, J. Amann, D. Angal-Kalinin, R. Apsimon, S. Araki, A. Aryshev, S. Bai,P. Bellomo, D. Bett, G. Blair, B. Bolzon, S. Boogert, G. Boorman, P. N. Burrows, G. Christian, P. Coe,B. Constance, J.-P. Delahaye, L. Deacon, E. Elsen, A. Faus-Golfe, M. Fukuda, J. Gao, N. Geffroy,E. Gianfelice-Wendt, H. Guler, H. Hayano, A.-Y. Heo, Y. Honda, J.Y. Huang, W. H. Hwang, Y. Iwashita,A. Jeremie, J. Jones, Y. Kamiya, P. Karataev, E.-S. Kim, H.-S. Kim, S. H. Kim, S. Komamiya, K. Kubo,T. Kume, S. Kuroda, B. Lam, A. Lyapin, M. Masuzawa, D. McCormick, S. Molloy, T. Naito, T. Nakamura,J. Nelson, D. Okamoto, T. Okugi, M. Oroku, Y. J. Park, B. Parker, E. Paterson, C. Perry, M. Pivi,T. Raubenheimer, Y. Renier, J. Resta-Lopez, C. Rimbault, M. Ross, T. Sanuki, A. Scarfe, D. Schulte,A. Seryi, C. Spencer, T. Suehara, R. Sugahara, C. Swinson, T. Takahashi, T. Tauchi, N. Terunuma, R. Tomas,J. Urakawa, D. Urner, M. Verderi, M.-H. Wang, M. Warden, M. Wendt, G. White, W. Wittmer, A. Wolski,M. Woodley, Y. Yamaguchi, T. Yamanaka, Y. Yan, H. Yoda, K. Yokoya, F. Zhou, and F. Zimmermann (ATF Collaboration), Present status and first results of the final focus beam line at the KEK Accelerator Test Facility Phys. Rev. ST Accel. Beams 13, 42801 (2010)
  7. M. Bleuel, J.M.Carpenter, B.J.Micklich, P.Geltenbort, K.Mishima, H.M.Shimizu, Y. Iwashita, K. Hirota, M.Hino, S.J.Kennedy, J.Lal, A Small Angle Neutron Scattering (SANS) Experiment using Very Cold Neutrons (VCN) Physica B, Elsevier 404, 2629-2632 (2009)
  8. M.Yamada, Y Iwashita, M.Ichikawa, T.Sugimoto, H.Tongu, H.Fujisawa, H.M.Shimizu, T.Ino, K.Mishima, K.Taketani, T.Yoshioka, S.Muto, T.Morishima, T.Oku, J.Suzuki, T.Shinohara, K.Sakai, H.Sato, K.Hirota, Y.Otake, Y.Seki, S.Kawasaki, S.Komamiya, Y.Kamiya, H.Otono, S. Yamashita, P. Geltenbort, Development of modulating permanent magnet sextupole lens for focusing of pulsed cold neutrons PhysicaB 404, 2646-2651 (2009)
  9. Wakita A, Iwashita Y, Shirai T, Ikegami M, Tongu H, Souda H, Mori M, Yogo A, Orimo S, Nishiuchi M, Ogura K, Sagisaka A, Ma J L, Pirozhkov A S, Kiriyama H, Nakai Y, Shimomura T, Tanoue M, Akutsu A, Okada H, Motomura T, Kondo S, Kanazawa S, Sugiyama H, Daido H, Noda A, Characteristics of a Laser-Produced Proton Beam Improved by a Synchronous RF Field Nucl. Instrum. Meth. A599, 15-19 (2009).
  10. Iwashita Y, Tajima Y, Hayano H, Development of High Resolution Camera for Observations of Superconducting Cavities Phys. Rev. ST Accel. Beams 11, [093501-1]-[093501-6] (2008).
  11. Mori, M; Yogo, A; Kiriyama, H; Nishiuchi, M; Ogura, K; Orimo, S; Ma, J; Sagisaka, A; Kanazawa, S; Kondo, S; Nakai, Y; Akutsu, A; Yamamoto, Y; Shimomura, T; Tanoue, M; Nakamura, S; Shirai, T; Iwashita, Y; Noda, A; Oshi, Y; Nayuki, T; Fujii, T; Nemoto, K; Choi, IW; Yu, TJ; Ko, DK; Lee, J; Daido, H; Esirkepov, T; Bulanov, SV; Bolton, PR; Kimura, T, New method to measure the rise time of a fast pulse slicer for laser ion acceleration research IEEE TRANSACTIONS ON PLASMA SCIENCE 36, 1872-1877 (2008).
  12. Antokhin, E; Kumada, M; Iwashita, Y; Wakasa, S; Matsumoto, S; Fujisawa, T; Bolhsakova, I; Holyaka, R; Erashok, V; Sugiyama, E; Shimizu, H, Permanent magnet system for PET cyclotron IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 18, 965-968 (2008).
  13. Tajima, Y; Iwashita, Y; Funjisawa, H; Ichikawa, M; Tongu, H, Reduction of skin effect RF power loss by a thin conductor foil JAPANESE JOURNAL OF APPLIED PHYSICS 47, 4765-4768 (2008).
  14. Iwashita, Y; Ichikawa, M; Tajima, Y; Nakamura, S; Kumada, M; Spencer, CM; Tauchi, T; Kuroda, S; Okugi, T; Ino, T; Muto, S; Shimizu, HM, Strong variable permanent multipole magnets IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 18, 957-960 (2008).
  15. Iwashita Y, Tajima Y, Ichikawa M, Nakamura S, Ino T, Muto S, Shimizu H M, Variable permanent magnet sextupole lens for focusing of pulsed cold neutrons Nucl. Instrum. Meth. A586, 73-76 (2008).
  16. Sagisaka, A; Daido, H; Ogura, K; Orimo, S; Hayashi, Y; Mom, M; Nishiuchi, M; Yogo, A; Kado, M; Fukumi, A; Li, Z; Pirozhkov, AS; Nakamura, S; Iwashita, Y; Shirai, T; Noda, A; Oishi, Y; Nayuki, T; Fujii, T; Nemoto, K, Characterization of an intense laser-produced preformed plasma for proton generation JOURNAL OF THE KOREAN PHYSICAL SOCIETY 51, 442-446 (2007).
  17. Noda, A; Nakamura, S; Iwashita, Y; Shirai, T; Toncu, H; Souda, H; Daido, H; Mori, M; Kado, M; Sagisaka, A; Ogura, K; Nishiuchi, M; Orimo, S; Hayashi, Y; Yogo, A; Pirozhkov, A; Bulanov, S; Esirkepov, T; Nagashima, A; Kimura, T; Tajima, T; Takeuchi, T; Fukumi, A; Li, Z, High quality laser-produced proton beam generation by phase rotation INTERNATIONAL JOURNAL OF MODERN PHYSICS B 21, 319-330 (2007).
  18. Nakamura, S; Ikegami, M; Iwashita, Y; Shirai, T; Tongui, H; Souda, H; Daido, H; Mori, M; Kado, M; Sagisaka, A; Ogura, K; Nishiuchi, M; Orimo, S; Hayashi, Y; Yogo, A; Pirozhkov, AS; Bulanov, SV; Esirkepov, T; Nagashima, A; Kimura, T; Tajima, T; Takeuchi, T; Fukumi, A; Li, Z; Noda, A, High-quality laser-produced proton beam realized by the application of a synchronous RF electric field JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS 46, L717-L720 (2007).
  19. Yogo, A; Daido, H; Fukumi, A; Li, Z; Ogura, K; Sagisaka, A; Pirozhkov, AS; Nakamura, S; Iwashita, Y; Shirai, T; Noda, A; Oishi, Y; Nayuki, T; Fujii, T; Nemoto, K; Choi, IW; Sung, JH; Ko, DK; Lee, J; Kaneda, M; Itoh, A, Laser prepulse dependency of proton-energy distributions in ultraintense laser-foil interactions with an online time-of-flight technique PHYSICS OF PLASMAS 14, (2007).
  20. Tajima, T; Canabal, A; Zhao, Y; Romanenko, A; Moeckly, BH; Nantista, CD; Tantawi, S; Phillips, L; Iwashita, Y; Campisi, IE, MgB2 for application to RF cavities for accelerators IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 17, 1330-1333 (2007).
  21. Y. Iwashita, S. Nakamura, K. Yamada, A. Ogata, Y. Wada, K. Hirota, Possibility of a Small Neutron Source by Laser-Plasma Interaction Special Issue in International Journal of Modern Physics B (IJMPB) 21, 600 - 608 (2007).
  22. Orimo, S; Nishiuchi, M; Daido, H; Yogo, A; Ogura, K; Sagisaka, A; Li, Z; Pirozhkov, A; Mori, M; Kiriyama, H; Kanazawa, S; Kondo, S; Yamamoto, Y; Shimomura, T; Tanoue, M; Nakai, Y; Akutsu, A; Nakamura, S; Shirai, T; Iwashita, Y; Noda, A; Oishi, Y; Nemoto, K; Choo, IW; Yu, TJ; Sung, JH; Jeong, TM; Kim, HT; Hong, KH; Noh, YC; Ko, DK; Lee, J, Simultaneous proton and X-ray imaging with femtosecond intense laser driven plasma source JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS 46, 5853-5858 (2007).
  23. Yogo, A; Nishiuchi, M; Fukumi, A; Li, Z; Ogura, K; Sagisaka, A; Orimo, S; Kado, M; Hayashi, Y; Mori, M; Daido, H; Nemoto, K; Oishi, Y; Nayuki, T; Fujii, T; Nakamura, S; Shirai, T; Iwashita, Y; Noda, A, Enhancement of high energy proton yield with a polystyrene-coated metal target driven by a high-intensity femtosecond laser APPLIED PHYSICS B-LASERS AND OPTICS 83, 487-489 (2006).
  24. Iwashita Y, Sato A, Arimoto Y, Magnetic Field Distribution Control with Anisotropic Inter-Pole Magnetic Field IEEE Trans. on Applied supercond 16-2, 1286-1289 (2006).
  25. Nakamura S, Iwashita Y, Noda A, Shirai T, Tongu H, Fukumi A, Kado M, Yogo A, Mori M, Orimo S, Ogura K, Sagisaka A, Nishiuchi M, Hayashi Y, Li Zg, Daido H, Wada Y, Real-Time Optimization of Proton Production by Intense Short-Pulse Laser with Time-of-Flight Measurement Japanese Journal of Applied Physics 45-34, L913-L916 (2006).
  26. Nishiuchi, M; Fukumi, A; Daido, H; Li, Z; Sagisaka, A; Ogura, K; Orimo, S; Kado, M; Hayashi, Y; Mori, M; Bulanov, SV; Esirkepov, T; Nemoto, K; Oishi, Y; Nayuki, T; Fujii, T; Noda, A; Iwashita, Y; Shirai, T; Nakamura, S, The laser proton acceleration in the strong charge separation regime PHYSICS LETTERS A 357, 339-344 (2006).
  27. Mihara T, Iwashita Y, Kumada M, Spencer C M, Variable Permanent Magnet Quadrupole IEEE Trans. on Applied supercond 16-2, 224-227 (2006).
  28. Li, Z; Nakamura, S; Fukumi, A; Hayashi, Y; Orimo, S; Nishiuchi, M; Sagisaka, A; Mori, M; Shirai, T; Iwashita, Y; Noda, A; Daido, H, Electron energy spectrometer for laser-driven energetic electron generation JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS 44, 6796-6800 (2005).
  29. Ikegami M, Iwashita Y, Souda H, Tanabe M, Noda A, Electrostatic deflectors and dispersion suppressors: Their formulation and application to a storage ring Phys. Rev. ST Accel. Beams 8, 124001 (2005).
  30. Iwashita Y, Neat bunching scheme with amplitude modulation Nucl. Phys. Proc. Suppl. , Elsevier 149, 268-270 (2005).
  31. C. Ohmori, M. Aoki, Y. Kuriyama, M. Yoshida, Y. Arimoto, M.A. Sato, Y.Kuno, Y. Iwashita, and S. Ninomiya, Ultra-high field gradient RF for bunch rotation Nucl. Phys. Proc. Suppl. 149, 280-282 (2005)
  32. Takai R, Ito K, Iwashita Y, Okamoto H, Taniguchi S, Tomita Y, Design and fabrication of a linear Paul trap for the study of space-charge-dominated beams Nucl. Instr. Meth. Phys. Res. A 532, 508-512 (2004).
  33. Takeuchia T, Noda K, Shibuya S, Fadil H, Ikegami M, Iwashita Y, Shirai T, Tongu T, Noda A, Optimization of lattice quadrupole magnets for cooler ring, S-LSR Nucl. Instr. Meth. Phys. Res. A 532, 497-502 (2004).
  34. Shirai T, Fadil H, Ikegami M, Tongu H, Iwashita Y, Noda A, Noda K, Shibuya S, Takeuchi S, Okabe K, Yuri Y, Okamoto H, Grieserd M, Syresine E M, S-LSR: test ring for beam crystal, its design and ordering simulation Nucl. Instr. Meth. Phys. Res. A 532, 488-491 (2004).
  35. Mihara T, Iwashita Y, Kumada M. Spencer C M, Antokhin E, Super Strong Permanent Magnet Quadrupole for a Linear Collider IEEE trans. Appl. Supercond. 14, no.2, , June 2004. 14, pp.469-472 (2004).
  36. M.Kumada, T.Fujisawa, Y.Hirao, M.Endo, M.Aoki, T.Kohda, Y.Iwashita, Bolshakova, R.Holyaka, Development of high field permanent magnets IEEE Trans. on Applied superconductivity
  37. Y. Iwashita, Distributed modulating buncher for the phase rotation of muons Nucl. Inst. & Meth. A 503, pp.312-317 (2003)
  38. Matsukado K, Esirkepov T, Kinoshita K, Daido H, Utsumi T, Li Z, Fukumi A, Hayashi Y, Orimo S, Nishiuchi M, Bulanov S V, Tajima T, Noda A, Iwashita Y, Shirai T, Takeuchi T, Nakamura S, Yamazaki A, Ikegami M, Mihara T, Morita A, Uesaka M, Yoshii K, Watana, Energetic Protons from a Few-Micron Metallic Foil Evaporated by an Intense Laser Pulse Phys. Rev. Lett. 91, 215001-1,215001-4 (2003).
  39. Y. Iwashita, High-gradient acceleration in a newtrino factory with FFAG rings Nucl. Inst. & Meth. A 503, pp.309-311 (2003)
  40. Morita A, Iwashita Y, Noda A, et al., Design and measurement of a combined function magnet intended for a cancer therapy accelerator PHYS REV SPEC TOP-AC 4, (12):art. no. 122401 Part 2 (DEC 2001)
  41. Iwashita Y, High Gradient Air Core Cavity for Long Bunch Nucl. Inst. & Meth. A 472/3, pp.645-651 (2001)
  42. H. Ao, M. Inoue, Y. Iwashita, T. Shirai and A. Noda, Model Test of Biperiodic L-support Disk-and-Washer Linac Structure Jpn. J. Appl. Phys. Vol.39, pp.651-656 (2000)
  43. Fujieda M, Iwashita Y, Noda A, Mori Y, Ohmori C, Sato Y, Yoshii M, Blaskiewicz M, Brennan J M, Roser T, Smith K S, Spitz R and Zaltsmann A, Barrier bucket experiment at the AGS Phys. Rev. ST Accel. Beams 2 , 122001 (1999)
  44. Urakabe E, Hiramoto K, Inoue M, Iwashita Y, Kanazawa M, Morita A, Nishi M, Norimine T, Noda A, Noda K, Ogawa H, Shirai T, Torikoshi M, Umezawa M, Yamada S, Fujita Y, Beam Profile Control with Use of the Octupole Magnet Jpn. J. Appl. Phys. Vol. 38, 6145-6149 (1999)
  45. Iwashita Y, Noda A, Shirai T, Morita A, Tadokoro M, Hirota J.I., Umezawa M and Hiramoto K, Novel Design for Electromagnet with Wide Excitation Range Jpn. J. Appl. Phys Vol. 38, L895-L897 (1999).
  46. Kihara T, Okamoto H, Iwashita Y, Oide K, Lamanna G, and Wei J, Three-dimensional laser cooling method based on resonant linear coupling Phys. Rev. E 59, 3594-3604 (1999)
  47. Iwashita Y, Accuracy of Eigenvalue Obtained with Hybrid Elements on Axisymmetric Domains IEEE Trans. MAG-34 5, 2543-2546 (1998)
  48. Saito K, Hirota J, Noda F, Iwashita Y, Noda A and Inoue M, An Untuned RF Cavity Loaded with Fe-based Nanocrystalline FINEMET Cores Beam Science and Technology 2, 15-19 (1997)
  49. K. Saito, J.I.Hirota, M. Katane, M. Tadokoro, Y. Iwashita A. Noda, M. Inou, An untuned RF cavity using multifeed coupling Nucl. Instrum. Methods Phys. Res. A, Accel. Spectrom. Detect. Assoc. Equip. (Netherlands) 401, no.1, 133-143 (1997).
  50. Y.Iwashita, Ferro-magnetic material loaded untuned RF cavity for synchrotron Jpn. J. Appl. Phys. 2, Lett. (Japan) vol.36, no.6A, pp.L727-8 (1 June 1997)
  51. V.Kapin, M.Inoue, Y.Iwashita, A.Noda, Application of the two stable phases phenomenon for improvement of the longitudinal stability in RFQ-like funneling system 12th International Conference on Laser Interaction and Related Plasma Phenomena, Osaka, Japan, 24-28 April 1995AIP Conf. Proc. (USA) no.369, pt.2, pp.1127-32 (1996)
  52. Noda A, Dewa H, Fujita H, Ikegami M, Inoue M, Iwashita Y, Kakigi S, Kando M, Mashiko K, Okamoto H, Shirai T, Sugimura T, Tonguu H, Electron Storage Ring, KSR Beam Science and Technology 1, 37-40 (1996.)
  53. H.Dewa, H.Ao, T.Kihara, H.Tonguu, T.Shirai, H.Okamoto, Y.Iwashita, H.Fujita, S.Kakigi, A.Noda, M.Inoue, Longitudinal beam emittance monitor for 433 MHz proton linac Rev. Sci. Instrum. (USA) vol.67, no.9, pp.3085-91 (Sept. 1996)
  54. Hiramoto K, Hirota J, Norimine T, Nishi M, Katane M, Sakurabata H, Noda A, Iwashita Y and Inoue M, A Compact Proton Synchrotron with a Combined Function Lattice Dedicated for Medical Use Bull.Inst. Chem.Res., Kyoto Univ. 73, 11-18 (1995)
  55. Hirota J, Hiramoto K, Katane M, Iwashita Y, Noda A and Inoue M, A Ferrite-Loaded, Untuned Cavity with Multiple Power Feeding Bull.Inst.Chem. Res., Kyoto Univ. 73, 41-49 (1995)
  56. Dewa H, Kando M, Ikegami M, Shirai T, Okamoto H, Iwashita Y, Fujita H, Kakigi S, Noda A and Inoue M, A New Longitudinal Emittance Monitor for Proton Beams Using Elastic Scattering by a Gold Target Bull.Inst.Chem.Res., Kyoto Univ. 73, 90-96 (1995)
  57. Inoue M, Noda A, Iwashita Y and Shirai T, A Pulsed Reactor with a Proton Linear Accelerator Bull.Inst. Chem.Res., Kyoto Univ. 73, 106-110 (1995)
  58. Iwashita Y, Biperiodic L-Support DAW for Electron Acceleration Bull.Inst.Chem.Res., Kyoto Univ. 73, 97-105 (1995)
  59. Ikegami M, Kando M, Dewa H, Fujita H, Shirai T, Iwashita Y, Kakigi S, Noda A and Inoue M, Double slit Emittance Monitor for Pulsed Proton Beams Bull. Inst.Chem.Res., Kyoto Univ. 73, 1-10 (1995)
  60. Noda A, Dewa H, Fujita H, Ikegami M, Iwashita Y, Kakigi S, Kando M, Mashiko K, Shirai T and Inoue M, Outline of the Compact Electron Storage Ring, KSR Bull.Inst.Chem.Res., Kyoto Univ. 73, 27-32 (1995)
  61. Kapin V, Inoue M, Iwashita Y and Noda A, Quantitative Analysis of 4-rod RFQ Resonators Bull. Inst.Chem.Res., Kyoto Univ. 73, 50-77 (1995)
  62. Shirai T Dewa H, Fujita H, Kando M, Ikegami M, Iwashita Y, Kakigi S, Noda A, Mashiko K and Inoue M, System of the 100 MeV Electron Injector for the KSR Bull.Inst.Chem.Res., Kyoto Univ. 73, 78-89 (1995.)
  63. Y.Iwashita, Disk-and-washer structure with biperiodic support Nucl. Instrum. Methods Phys. Res. A, Accel. Spectrom. Detect. Assoc. Equip. (Netherlands) vol.348, no.1, pp.15-33 (21 Aug. 1994)
  64. A.Noda, Y.Iwashita, H.Fujita, H.Okamoto, S.Kakigi, T.Shirai, M.Inoue, Characteristics of the ion source and low energy beam transport of the proton linac at ICR Bull. Inst. Chem. Res. Kyoto Univ. vol.71, no.1, pp.6-14 (March 1993)
  65. K.Ikeda, T.Kan, K.Yoshizawa, H.Yokobori, J.Hirota, Y.Iwashita, H.Okamoto, A.Noda, M.Inoue, Cold model test of a DTL with transition from 4 pi to 2 pi -mode acceleration Bull. Inst. Chem. Res. Kyoto Univ. vol.71, no.1, pp.26-36 (March 1993)
  66. M.Inoue, H.Dewa, H.Fujita, Y.Iwashita, S.Kakigi, A.Noda, H.Okamoto, T.Shirai, Commissioning of the 7 MeV proton linac at ICR Kyoto University Bull. Inst. Chem. Res. Kyoto Univ. vol.71, no.1, pp.57-61 (March 1993)
  67. H.Fujita, M.Inoue, Y.Iwashita, A.Noda, Present status of the vacuum system for the 7 MeV proton linac Bull. Inst. Chem. Res. Kyoto Univ. vol.71, no.1, pp.21-5 (March 1993)
  68. T.Shirai, H.Dewa, Y.Iwashita, H.Okamoto, H.Fujita, S.Kakigi, A.Noda, M.Inoue, Study of beam profile monitor for the proton linac Bull. Inst. Chem. Res. Kyoto Univ. vol.71, no.1, pp.15-20 (March 1993)
  69. K.Ikeda, T.Kan, K.Yoshizawa, J.Hirota, Y.Iwashita, H.Okamoto, A.Noda, M.Inoue, Cold model test of a four vane RFQ for multi-purpose use linac Bull. Inst. Chem. Res. Kyoto Univ. vol.70, no.1, pp.99-108 (March 1992)
  70. H.Dewa, Y.Iwashita, H.Okamoto, A.Noda, T.Shirai, M.Inoue, Design study of a beam matching section for the ICR proton linac Bull. Inst. Chem. Res. Kyoto Univ. vol.70, no.1, pp.89-98 (March 1992)
  71. T.Shirai, M.Inoue, Y.Iwashita, A.Noda, H.Takekoshi, S.Tsuruoka, High power circulator for the 433.3 MHz proton linac Nucl. Instrum. Methods Phys. Res. A, Accel. Spectrom. Detect. Assoc. Equip. (Netherlands) vol.A321, no.3, pp.429-33, 1 (Oct. 1992)
  72. T.Shirai, H.Dewa, H.Ego, M.Inoue, Y.Iwashita, A.Noda, H.Okamoto, H.Takekoshi, High power dummy-load for RF system in the linac Bull. Inst. Chem. Res. Kyoto Univ. vol.70, no.1, pp.45-54 (March 1992)
  73. A.Noda, Y.Iwashita, H.Dewa, H.Ego, H.Okamoto, S.Kakigi, T.Shirai, H.Takekoshi, K.Fukunaga, H.Fujita, M.Inoue, Improvement of the proton accelerator system Bull. Inst. Chem. Res. Kyoto Univ. vol.70, no.1, pp.37-44 (March 1992)
  74. H.Akiyama, H.Kondou, K.Satoh, T.Nakagawa, T.Fujimoto, Y.Iwashita, M.Inoue, Lifetime Control in Thyristors by Proton Irradiation Bull. Inst. Chem. Res. Kyoto Univ. vol.70, no.1, pp.55-60 (March 1992)
  75. H.Fujisawa, M.Tamada, T.Katagiri, Y.Iwashita, H.Takekoshi, Mechanical design of 33.3 MHz 4-rod heavy ion RFQ cavity Bull. Inst. Chem. Res. Kyoto Univ. vol.70, no.1, pp.28-36 (March 1992)
  76. H.Fujisawa, M.Tamada, Y.Iwashita, A.Noda, M.Inoue, RF characteristics of the 33.3 MHz 4-rod RFQ 1992 Linear Accelerator Conference Proceedings (AECL-10728) vol.A321, no.3, pp.766-8 vol.2 (1992)
  77. H.Ego, Y.Iwashita, H.Takekoshi, The effect of biasing the plasma electrode on hydrogen ion formations in a multicusp ion source Bull. Inst. Chem. Res. Kyoto Univ. vol.70, no.1, pp.61-70 (March 1992)
  78. M.Inoue, Y.Iwashita, A.Noda, Accelerators for proton therapy Bull. Inst. Chem. Res. Kyoto Univ. vol.69, no.1, pp.50-8 (March 1991)
  79. H.Fujisawa, Y.Iwashita, H.Takekoshi, Design study of a heavy ion RFQ linac Bull. Inst. Chem. Res. Kyoto Univ. vol.68, no.2, pp.121-6 (Oct. 1990)
  80. T.Shirai, H.Ego, H.Okamoto, Y.Iwashita, Effect of constant curvature vane tip on RF quadrupole linac beam dynamics Bull. Inst. Chem. Res. Kyoto Univ. vol.68, no.2, pp.127-32 (Oct. 1990)
  81. Y.Iwashita, M.Inoue, H.Ego, H.Okamoto, S.Kakigi, M.Sawamura, T.Shirai, H.Fujita, K.Fukunaga, H.Takekoshi, System of 7 MeV-proton linac Bull. Inst. Chem. Res. Kyoto Univ. vol.68, no.2, pp.156-61 (Oct. 1990)
  82. H.Fujisawa, Y.Iwashita, H.Takekoshi, 4-rod RFQ proton acceleration tests Bull. Inst. Chem. Res. Kyoto Univ vol.67, no.1, pp.7-14 (March 1989)
  83. Y.Iwashita, General Eigenvalue Solver for Large Sparse Symmetric Matrix with Zero Filtering Bull. Inst. Chem. Res. Kyoto Univ. vol.67, no.1, pp.32-39 (March 1989)
  84. H.Okamoto, Y.Iwashita, H.Takekoshi, Simple measurement systems for permanent magnet quadrupole lenses Rev. Sci. Instrum. (USA) vol.60, no.9, pp.2975-80 (Sept. 1989)
  85. M.Sawamura, H.Okamoto, Y.Iwashita, K.Fukunaga, M.Inoue, H.Takekoshi, Design of 433.3 MHz Alvarez drift tube linac and beam matching section Bull. Inst. Chem. Res. Kyoto Univ. vol.66, no.1, pp.38-43 (March 1988)
  86. M.Sawamura, H.Okamoto, Y.Iwashita, K.Fukunaga, M.Inoue, H.Takekoshi, RF characteristics of 433.3-MHz proton RFQ linac Bull. Inst. Chem. Res. Kyoto Univ. vol.66, no.1, pp.29-37 (March 1988)
  87. H.Okamoto, K.Fukunaga, Y.Iwashita, M.Sawamura, M.Inoue, H.Takekoshi, Design of 433.3-MHz proton RFQ linac Bull. Inst. Chem. Res. Kyoto Univ. vol.65, no.1, pp.35-45 (March 1987)
  88. T.Ogawa, Y.Iwashita, Model study of the 4-rod structure of an RFQ linac Bull. Inst. Chem. Res. Kyoto Univ. (Japan) vol.65, no.1, pp.51-8 (March 1987)
  89. H.Okamoto, Y.Iwashita, Study of permanent magnet quadrupole lens for proton linac Bull. Inst. Chem. Res. Kyoto Univ. vol.64, no.1, pp.20-4 (March 1986)
  90. Y.Ikeda, Y.Katayama, Y.Iwashita, Design and fabrication of permanent magnet quadrupole lens Bull. Inst. Chem. Res. Kyoto Univ. vol.62, no.1, pp.29-38 (March 1984)
  91. Y.Iwashita, Disk-and-washer linac structure with biperiodic T supports, 1983 Particle Accelerator Conference. Accelerator Engineering and Technology, Santa Fe, NM, USA, 21-23 March 1983 IEEE Trans. Nucl. Sci. (USA) vol.ns-30, no.4, pt.2, pp.3542-4 (Aug. 1983)
  92. T.Higo, Y.Iwashita, S.Matsuki, A plunger system for the recoil-distance Doppler-shift life-time measurements of nuclear excited states Bull. Inst. Chem. Res. Kyoto Univ. vol.60, no.2, pp.181-6 (March 1982)
  93. T.Higo, Y.Iwashita, Cross Assembler/Editor Program of HP2100 to use Intel 8085 , Bull. Inst. Chem. Res. Kyoto Univ. vol.58, no.1, 78-87 (Jan. 1980)
  94. Y.Iwashita, Field stability improvement of the Kyoto University cyclotron Bull. Inst. Chem. Res. Kyoto Univ. vol.58, no.1, pp.25-8 (Jan. 1980)
  95. Y.Iwashita, T.Higo, K.Kuroki, Magnetic field trimming effect of saturated ferromagnetic rods (in superconducting cyclotron) Bull. Inst. Chem. Res. Kyoto Univ. vol.58, no.1, 78-87 (Jan. 1980)
  96. T.Higo, S.Matsuki, Y.Iwashita, A.Okihana, N.Fujiwara, T.Yanabu, Efficiency calculation and measurement of large NE213 neutron counter Bull. Inst. Chem. Res. Kyoto Univ. vol.57, no.1, pp.13-22 (Jan. 1979)
  97. S.Matsuki, T.Higo, Y.Iwashita, T.Sekioka, T.Yanabu, H.Itoh, T.Maki, A.Yoshimura, H.Yoshinaga, T.Cho, S.Uehara, Energy spectra of neutrons induced by 0.75 GeV/c negative pions on complex nuclei Phys. Lett. B (Netherlands) vol.84B, no.1, pp.67-70 (4 June 1979)
  98. I.Kumabe, M.Hyakutake, M.Inoue, K.Hosono, K.Yuasa, B.Sakei, T.Yamagata, S.Kishimoto, T.Yanabu, T.Higo, Y.Iwashita, K.Ogino, N.Sakamoto, Excitation of 6+, 8+/, 10+, and 9- states in 122Sn by reactions (p, t) and (p, p’) J. Phys. Soc. Jpn. (Japan) vol.47, no.2, 673-4 (1979)

Update: Apr 02,2012