Development of Effective Simultaneous Measurement Method for High Energy Neutron and Photon Production Cross Section

• Project/Area Number: 19760612
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Nuclear engineering
• Research Institution: Kyushu University
• Principal Investigator: SHIGYO Nobuhiro Kyushu University, 大学院・工学研究院, 助教 (40304836)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥3,680,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥480,000); Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2008: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2007: ¥1,600,000 (Direct Cost: ¥1,600,000)
• Keywords: 高エネルギー / 中性子 / ガンマ線 / 無機シンチレータ / 断面積 / 放射線、X線、粒子線 / シンチレータ / 放射線

Research Abstract

The measurement system for neutron and photon production cross section for several hundred MeV region with high efficiency has been developed. The BGO inorganic scintillator 5.08 cm long and 5.08 cm in thickness was adopted as a detector. The difference of signal decay time of the detector was utilized to separate neutron and photon events. The measurement system had higher efficiency of about 1.8 times than the system with the larger liquid organic scintillator.