Measurements of neutron capture cross section of Cl using NaCl samples with different Cl isotope compositions

Hara, Kaoru*; Fujii, Nobuya*; Kamiyama, Takashi*; Narita, Yuki*; Sato, Hirotaka*; Katabuchi, Tatsuya*; Iwamoto, Nobuyuki; Nakamura, Shoji; Toh, Yosuke

no journal, , 

Radioactive Cl is an activation product which is generated by neutron capture reaction on stable Cl. It is known that Cl is included in coolant and shielding materials of nuclear and accelerator facilities. In order to accurately know the produced amount, it is needed to enhance the accuracy of neutron capture cross section on Cl. In this work we performed a neutron capture experiment with NaI(Tl) spectrometer of the ANNRI in J-PARC MLF. Three NaCl samples were used with different Cl isotope compositions. We made the resonance analyses by three measured data, and derived the neutron capture cross section of Cl in the energy range of 0.02 eV to 1 keV.