[1M17-22] Neutron Capture Cross Sections, Photonucleear Reactions

[1M19] Evaluation of Time-dependent Background in the KURRI-LINAC with the TOF method

*Jaehong Lee¹, Jun-ichi Hori², Tadafumi Sano², Ken Nakajima² (1.Department of Nuclear Engineering, Kyoto University, 2.Research Reactor Institute, Kyoto University)

Keywords: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.