Measurement of the Se-80(gamma, n) Cross Section Using Laser-Compton Scattering gamma-Rays

作者：Kitatani Fumito^*; Harada Hideo; Goko Shinji; Utsunomiya Hiroaki; Akimune Hidetoshi; Kaihori Takeshi; Toyokawa Hiroyuki; Yamada Kawakatsu

来源：Journal of Nuclear Science and Technology, 2010, 47(4): 367-375.

DOI：10.1080/18811248.2010.9711967

• photonuclear reaction
• neutron capture cross section
• inverse reaction
• Se-80
• Se-79
• Au-197
• laser-Compton scattering gamma rays
• high-energy gamma rays
• high-resolution spectrometer

The Se-80(gamma, n)Se-79 cross section was measured with laser-Compton scattering (LCS) gamma-rays to supply fundamental data for the estimation of the inverse reaction cross sections, i.e., the Se-79(n, gamma)Se-80 cross section. An enriched Se-80 sample and a reference Au-197 sample were irradiated with LCS gamma-rays whose maximum energy was varied from 10.5 to 16.0 MeV. The energy distributions of LCS gamma-rays were precisely determined using a high-resolution high-energy photon spectrometer (HHS). Emitted neutrons were detected by a high-efficiency 4 pi-He-3 detector. The excitation function of the Se-80(gamma, n) cross section was determined for the energy range of 10.2-14.6 MeV. The energy point corresponding to each cross section was deduced using the accurately determined energy distribution of LCS gamma-rays.

• 出版日期2010-4