[1M17-22] Neutron Capture Cross Sections, Photonucleear Reactions

[1M18] Measurements of neutron capture cross section of ³⁵Cl using NaCl samples with different Cl isotope compositions

*Kaoru Y. Hara¹, Nobuya Fujii¹, Takashi Kamiyama¹, Yuki Narita¹, Hirotaka Sato¹, Tatsuya Katabuchi², Nobuyuki Iwamoto³, Shoji Nakamura³, Yosuke Toh³ (1. Hokkaido Univ., 2. Tokyo Institute of Technology, 3. Japan Atomic Energy Agency)

Keywords:35Cl, Neutron capture cross section, ANNRI, 36Cl

Neutron capture cross section of a stable nucleus ³⁵Cl is useful nuclear data because it is relevant to the production of a long-lived radioactive waste ³⁶Cl (half-life 3*10⁵ yr) in coolant and shield materials of nuclear power and accelerator facilities. The neutron capture reactions for 3 NaCl samples which have different isotope compositions of chlorine were measured using an NaI(Tl) detector in ANNRI at J-PARC. The neutron capture cross section of ³⁵Cl in the energy range of 0.02 eV to 1 keV was obtained from the analysis of these measured data.