Measurement and analysis of 107-MeV proton-induced neutron yields for iron, lead and bismuth

Iwamoto, Hiroki   ; Meigo, Shinichiro   ; Satoh, Daiki   ; Iwamoto, Yosuke   ; Sugihara, Kenta; Nakano, Keita   ; Nishio, Katsuhisa   ; Ishi, Yoshihiro*; Uesugi, Tomonori*; Kuriyama, Yasutoshi*; Yashima, Hiroshi*; Okabe, Kota  ; Makii, Hiroyuki   ; Hirose, Kentaro  ; Orlandi, R.  ; Suzaki, Fumi  ; Oizumi, Akito   ; Tsukada, Kazuaki  ; Maekawa, Fujio  ; Mori, Yoshiharu*

For the purpose of research and development of accelerator-driven nuclear transmutation systems, neutron yields of 107-MeV proton incident on iron, lead and bismuth targets were measured by the flight time method using the FFAG accelerator at Kyoto University. The energy spectra of the neutron yield obtained by the measurements were compared with results of particle transport analysis with the nuclear reaction models (INCL4.6/GEM, Bertini/GEM, JQMD/GEM and JQMD/SMM/GEM) incorporated in the Monte Carlo particle transport calculation code PHITS and the nuclear data library JENDL-4.0/HE. As a result, it was found that the INCL4.6/GEM, which was the reference model of PHITS, best reproduced the experimental values.