Presentation Information
[8a-PA2-20]Measurement of Thermal Neutron Flux at the Kindai University Research Reactor Using the Activation of a Small CsI(Tl) Scintillator
〇Taku Katsuda1, Genichiro Wakabayashi2, Miyu Shimazu3, Kosei Kanayama1, Chisa Aoyama1 (1.Department of Electronics Engineering, Graduate School of Integrated Science and Engineering, Kindai Univ., 2.Kidai Univ. Institute of Nuclear Research, 3.Graduate School of Engineering, Kyushu Univ.)
Keywords:
Scintillator,Radiation
The Kindai University Research Reactor is used for a wide range of research as a shared-use facility, and it is essential to determine the thermal neutron flux in the irradiation environment as part of the experimental conditions. Previously, thermal neutron flux measurements were performed by applying the Cd filter method to the gold foil activation method; however, this approach required multiple irradiation and measurement cycles. Additionally, a major challenge was that sufficient radioactivity for neutron flux measurement could not be obtained during irradiation with low-intensity neutrons. In previous research, an attempt was made to measure thermal neutron flux without applying the Cd filter method by utilizing the activation of a CsI(Tl) scintillator. In this study, we compared and examined the results of thermal neutron flux measurements using CsI(Tl) scintillator activation, varying whether or not the Cd filter method was applied.