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Moribayashi, Kengo; Lee, K.*; Kagawa, Takashi*; Kim, D. E.*
Laser Physics, 16(2), p.322 - 324, 2006/02
Times Cited Count：1 Percentile：7.24(Optics)no abstracts in English
Moribayashi, Kengo; Kagawa, Takashi*; Kim, D. E.*
Journal of Plasma and Fusion Research SERIES, Vol.7, p.233 - 236, 2006/00
no abstracts in English
Moribayashi, Kengo; Kagawa, Takashi*; Kim, D. E.*
Journal of Physics B; Atomic, Molecular and Optical Physics, 38(13), p.2187 - 2194, 2005/07
Times Cited Count：6 Percentile：31.21(Optics)no abstracts in English
Moribayashi, Kengo; Sudo, Keiko*; Zhidkov, A. G.; Sasaki, Akira; Kagawa, Takashi*
Laser and Particle Beams, 19(4), p.643 - 646, 2001/10
Times Cited Count：6 Percentile：30.53(Physics, Applied)no abstracts in English
Suzuki, Masayuki; Yamagami, Susumu; Nagai, Keiji*; Norimatsu, Takayoshi*; Mima, Kunioki*; Murakami, Yoichi*; Nakayama, Takeyoshi*; Yu, W.*; Fiedorowicz, H.*; Choi, I. W.*; et al.
Proceedings of 2nd International Conference on Inertial Fusion Sciences and Applications (IFSA 2001), p.1252 - 1255, 2001/00
no abstracts in English
Zhidkov, A. G.; Sasaki, Akira; Utsumi, Takayuki*; Fukumoto, Ichiro; Tajima, Toshiki; Saito, Fumikazu*; Hironaka, Yoichiro*; Nakamura, Kazutaka*; Kondo, Kenichi*; Yoshida, Masataka*
Physical Review E, 62(5), p.7232 - 7240, 2000/11
Times Cited Count：51 Percentile：85.94(Physics, Fluids & Plasmas)no abstracts in English
Sasaki, Akira; Murakami, Izumi*; Takabe, Hideaki*
Reza Kenkyu, 28(7), p.446 - 449, 2000/07
no abstracts in English
Nomura, Masahiro; Toyama, Shinichi; ; ; Yamazaki, Yoshio; Hirano, Koichiro; Omura, Akiko
JNC TN9410 2000-007, 376 Pages, 2000/03
JNC-TN9410-2000-007.pdf:15.51MB
According to the Long-Term Program for Partitioning and Transmutation which was published by the Atomic Energy Commission in 1988, study on the transmutation using an electron accelerator, which was a part of the program, has been carried out in the O-arai Engineering Center. It is the study on converting radioactive fission products for example Strontium and Cesium to stable nuclides by photonuclear reaction caused by high energy gamma-ray made by an electron accelerator. It was thought that a 100mA-100MeV (10MW output power) accelerator would be needed in order to carry out the transmutation study in engineering phase. Therefore, development of the High-Current Electron Accelerator whose target had been 20mA-10MeV (200 kW output power) accelerator was carried out as development of elemental technologies on beam stabilization. The conceptual design of the accelerator was started in 1989. In March 1997, the main facility of this accelerator was completed. The test operation was carried out to confiim the performance of the accelerator from January, 1999 to December. As the result, an output of about 14 kW was achieved. In addition, the electron beam of 40 kW could be to accelerate in short time. In this report, the design, fabrication and evalution of performance of the facilities are presented.
; ; Toyama, Shinichi; Hasegawa, Makoto
JNC TN9410 2000-005, 182 Pages, 2000/03
JNC-TN9410-2000-005.pdf:5.73MB
According to the Long-term Program for Partitioning and Transmutation which was published by the Atomic Energy Commission in 1988, study on the transmutation using an electron accelerator, which was a part of the program, has been carried out in the O-arai Engineering Center. It is the study on converting radioactive fission products for example Strontium and Cesium to stable nuclides by photonuclear reaction caused by high energy gamma-ray made by an electron accelerator. It was thought that a 100mA-100Mev (10MW output power) accelerator would be needed in order to carry out the transmutation study in engineering phase. Therefore, development of the High-Current Electron Accelerator whose target had been 20mA-10Mev (200kW output power) accelerator was carried out as development of elemental technologies on beam stabilization. Construction of the accelerator was completed in March, 1997, afler development of the elemental devices. After the facility assessment, the full-scale experiment of the accelerator was started in January, 1999. However, the reform of the Power Reactor and Nuclear Fuel Development Corporation caused by the fire and explosion accident in the Asphalt Bitumenizing Facility was hardly discussed between the completion and the starting the experiment. It was decided that development of the accelerator would be terminated until the fiscal year 1999, results of the development would be summarized, and the developed accelerator would be planed to utilize as a beam utilization facility, in the Medium-Long-term Project Program of the Japan Nuclear Fuel Cycle Development Institute which was in March, 1999. It showed the direction that research and development for transmutation would be terminated. According to the Medium-Long-Term Project Program, the utilization of the accelerator was discussed, and research themes of the utilization of the accelerator in the various fields as well as nuclear field were investigated.
Moribayashi, Kengo; Sasaki, Akira; Zhidkov, A. G.; Ueshima, Yutaka; Sudo, Keiko*; Kagawa, Takashi*
Atomic Collision Research in Japan, No. 26, p.111 - 113, 2000/00
no abstracts in English
Moribayashi, Kengo; Sasaki, Akira; Ueshima, Yutaka
High-power Lasers in Energy Engineering (Proceedings of SPIE Vol.3886), p.634 - 641, 2000/00
no abstracts in English
Moribayashi, Kengo*; Sasaki, Akira; Tajima, Toshiki*
JAERI-Research 98-034, 37 Pages, 1998/07
JAERI-Research-98-034.pdf:1.37MB
no abstracts in English
AmLX radiation source in X-ray fluorescence analysis;
Dai-8-Kai Nihon Aisotopu Kaigi Hobunshu, B-2-3, p.257 - 259, 1968/00
no abstracts in English
Kado, Masataka; Ishino, Masahiko; Kishimoto, Maki; Tamotsu, Satoshi*; Yasuda, Keiko*; Shinohara, Kunio*
no journal, ,
Intense soft X-ray emissions are very useful for X-ray microscopy to observe living biological specimens. Increasing the photon flux in the range of wavelength 2.3 nm to 4.4 nm, so-called "water window", is a key issue for the soft X-ray microscopy. We have proposed to use ultra-thin foiled targets to limit the target mass to be heated by an intense pulsed laser. Thin foiled gold targets with various thicknesses from 10 nm to 50 
m were irradiated with an intense laser pulse at the wavelength of 1.053 m generated from a Nd:glass laser system with 20 J output energy in 600 ps pulse duration. The soft X-ray emissions from the laser-produced plasmas were measured with a soft X-ray spectrometer and a soft X-ray plasma camera. The X-ray flux increased as the target thickness decreased and reached the maximum at the target thickness of 20 nm. We have observed living biological cells with the soft X-ray emissions generated from the thin-foiled gold targets.
Kado, Masataka; Kishimoto, Maki; Tamotsu, Satoshi*; Yasuda, Keiko*; Aoyama, Masato*; Shinohara, Kunio*
no journal, ,
Laser-plasma soft X-ray source produced by a high power pulsed laser is extremely bright and very suitable for biological X-ray microscopy to capture an image of living specimens for which require a single flash exposure to avoid imaging any damages on the specimens. We also have invented to use a fluorescent microscope to identify the cellular organelles in the images obtained with the soft X-ray microscope. The biological cells were cultivated directly onto the PMMA photo resists and observed with the soft X-ray microscope and the fluorescent microscope at the same time. The obtained soft X-ray images and fluorescence images of the cells were directly compared and each cellular organelle such as mitochondria, actin filaments, and chromosomes in the soft X-ray images were clearly identified. Since the soft X-ray microscope has higher spatial resolution than that of the fluorescent microscope, fine structures of the cellular organelles in the hydrated biological cells were observed.
