[1M17-22] 中性子捕獲断面積，光核反応

[1M19] TOF法を用いたKURRI-LINACの時間依存性バックグラウンドに関する評価研究

*李 在洪¹、堀 順一²、佐野 忠史²、中島 健² (1. 京都大学 原子核工学、2. 京都大学 原子炉実験所)

キーワード：neutron capture cross section, time-of-flight (TOF) method, time-dependent background, Kyoto University Research Reactor Institute - Linear Accelerator (KURRI-LINAC)

In the measurement of neutron capture cross section using time-of-flight (TOF) method, the time-dependent background due to scattered neutrons and scattered gamma rays in the sample is a very important factor to obtain accurate neutron capture cross section data. For this reason, the present study focused on the evaluation of the time-dependent background in the Kyoto University Research Reactor Institute - Linear Accelerator (KURRI-LINAC) using the TOF method, and this evaluation was carried out under measurement conditions of an assembly of 12 BGO detectors, an octagonal moderator and the 12.7 m of neutron flight length.