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Generation of High Energy Gamma-ray by Laser Compton Scattering of 1.94-μm Fiber Laser in UVSOR-III Electron Storage Ring

Posted on 2016年6月30日

Generation of High Energy Gamma-ray by Laser Compton Scattering of 1.94-μm Fiber Laser in UVSOR-III Electron Storage Ring

Heishun Zen, Yoshitaka Taira, Taro Konomi, Takehito Hayakawa, Toshiyuki Shizuma, Junichiro Yamazaki, Toshiteru Kii, Hiroyuki Toyokawa, Masahiro Katoh, d, Hideaki Ohgaki

Energy Procedia Volume 89, June 2016, Pages 335–345

CoE on Sustainable Energy System (Thai-Japan), Faculty of Engineering, Rajamangala University of Technology Thanyaburi (RMUTT), Thailand

doi:10.1016/j.egypro.2016.05.044

Selective isotope transmutation of LLFP

Posted on 2016年6月24日

Proposal for selective isotope transmutation of long-lived fission products using quasi-monochromatic γ-ray beams

Takehito Hayakawa, Shuji Miyamoto, Ryoichi Hajima, Toshiyuki Shizuma, Sho Amano, Satoshi Hashimoto,  Tsuyoshi Misawa

Journal of Nuclear Science and Technology

Published online: 17 Jun 2016

We have proposed a new selective isotope transmutation method using photonuclear reactions with quasi-monochromatic γ-ray beams. This method is based on the fact that the particle threshold of a long-lived fission product (LLFP) such as 93Zr, 107Pd, or 79Se is lower than those of stable isotopes of the same chemical element. Therefore, this method has the excellent advantage that LLFPs cannot, in principle, be produced newly even if the target materials include stable isotopes in addition to LLFPs. Furthermore, this method is effective for 126Sn, 135, 137Cs, 90Sr, and 3H. The nuclear data involved and suitable γ-ray sources are discussed. Laser Compton scattering γ-ray sources and neutron capture γ-rays in nuclear reactors are candidates for this method.

Please visit the publisher’s web page for detail.

This research was supported by ImPACT Program of Council for Science, Technology and Innovation (Cabinet Office, Government of Japan) .

Fe-56 (γ,n) Fe-55, Physical Review C

Posted on 2016年4月14日

Spatial anisotropy of neutrons emitted from the Fe56(γ,n)Fe55 reaction with a linearly polarized γ-ray beam

T. Hayakawa, T. Shizuma, S. Miyamoto, S. Amano, A. Takemoto, M. Yamaguchi, K. Horikawa, H. Akimune, S. Chiba, K. Ogata, and M. Fujiwara

The paper describes a result of a nuclear physics experiment with a laser Compton scattered gamma-ray beam.

Phys. Rev. C 93, 044313 – Published 14 April 2016

For the full access to the paper, please visit the publisher’s site: