Photonuclear reaction cross sections of Cl-37 and Sm-152

Hara, Kaoru; Harada, Hideo   ; Kitatani, Fumito  ; Goko, Shinji*; Hohara, Shinya*; Kaihori, Takeshi*; Makinaga, Ayano*; Utsunomiya, Hiroaki*; Toyokawa, Hiroyuki*; Watanabe, Yukinobu*

Neutron capture cross sections of the unstable nuclei Cl (t=3.010 yr) and Sm (t=90 yr) are the fundamental data for the nuclear transmutation. The cross sections of the inverse Cl(,n)Cl and Sm(,n)Sm reaction were measured with the laser-Compton scattering (LCS) rays at 10.4-12.0 MeV and 8.3-12.4 MeV, respectively. Quasi-monochromatic beams of LCS photons irradiated a natural NaCl sample and an enriched SmO sample. The emitted neutrons were detected with a 4 neutron detector. The energy distribution of LCS beam was measured with a 120 Ge detector or the high-resolution high-energy photon spectrometer (HHS). The present data for Cl, Sm, and Au are compared with the previous data compiled in the IAEA document and the calculation with a nuclear reaction code TALYS.