Measurement of thick target neutron yields by 10 MeV deuteron incidence on tungsten

Shigyo, Nobuhiro*; Nishizawa, Tomoya*; Ishibashi, Kenji*; Iwamoto, Yosuke   ; Matsuda, Norihiro  ; Sakamoto, Yukio*; Hagiwara, Masayuki*

In this study, we measured TTNY of 10 MeV deuteron incidence on a thick tungsten target. The thickness of a tungsten target was 0.15 mm, in which a 10 MeV deuteron completely stopped. The target was put in a vacuum chamber in order to avoid energy loss of deuteron in the air. A 20 mm thick aluminum flange was set downstream of the target at 0 as a beam stopper for other thin target experiments. Two NE213 scintillators with 5.08 cm thickness and 5.08 cm diameter were adopted as neutron detectors. Measurement directions were 0, 15, 30 and 60. Flight paths between the target and detectors were from 2.0 to 5.0 m depending on available area in the room. Calculation results by PHITS with QMD model and TALYS with An-Cai deuteron optical potential are also given. Both calculations reproduce trend of experimental data, however, overestimate at 15, 30 and 60.