2019 Annual Meeting

Presentation information

Oral presentation

III. Fission Energy Engineering » 301-3 Research Reactor, Application of Neutron

[1J09-09] Research Reactor Property

Wed. Mar 20, 2019 3:35 PM - 3:50 PM Room J (Common Education Bildg. 2 3F No.32)

Chair:Masao Yamanaka(Kyoto Univ.)

3:35 PM - 3:50 PM

[1J09] The Evaluation of Sample Position Effect on Activation by Reactor Neutrons

*Naoki TAKAYAMA1, Hideo HARADA1, Masao KOMEDA1 (1. JAEA)

Keywords:JRR-3, Activation experiment, Neutron flux, Thermal neutron, Epithermal neutron, Monte Carlo calculation

As a basic research to accurately perform the activation experiment by the neutrons in the nuclear reactor, the irradiation position dependence of the neutron flux in the HR-1 irradiation hole of JRR-3 was calculated using MVP-3. Based on the calculation results, the influence of the deviation of the position of the metal foil for monitoring the neutron flux and the irradiated sample on the activation amount was evaluated. As a result, a significant effect was confirmed, and findings were obtained to enhance the method of deriving activation amounts and neutron cross sections.