Calculation of gamma-ray production cross sections at neutron energies of 1-20 MeV.
スポンサーリンク
概要
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In order to prepare the γ-ray data library requested in a design of fission and fusion reactors, γ-ray production cross sections and spectra of Al, Si, Ca, Fe, Ni, Cu, Nb, Ta, Au and Pb have been obtained at the neutron energies of 120 MeV, using a spin-dependent multi-step evaporation model. Calculations include dipole and quadrupole transition without the distinction between electric and magnetic process, and take explicit account of the role of yrast levels. The effects of the yrast levels and γ-ray strength function upon γ-ray production are also investigated in relation to particle emission, At the incident neutron energies where (n, n'γ) and/or (n, 2nγ) reactions are dominant, the present model is shown to be able to predict the production of secondary γ-rays (<9.0 MeV) from medium-heavy to heavy nuclei with reasonable accuracy.
著者
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Kitazawa Hideo
Research Laboratory For Nuclear Reactors Tokyo Instittute Of Technology
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Yamakoshi Hisao
Ship Research Institute
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SANO Yuji
Nuclear Engineering Laboratory, Toshiba Corp.
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KAWAI Masayoshi
NAIG Nuclear Research Laboratory, Nippon Atomic Industry Group Co., Ltd.
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KOBAYASHI Tsuguyuki
Nuclear Energy Group, Toshiba Corp.
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HARIMA Yoshiko
Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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KAWAI Masayoshi
NAIG Nuclear Research Laboratory Nippon Atomic Industry Group Co., Ltd.
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SANO Yuji
Nuclear Energy Group, Toshiba Corp.
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