Thermal neutron radiative capture cross-section of 186W(n, γ)187W reaction

3rd International Workshop on Theoretical and Computational Physics: Complex Systems and Interdisciplinary Physics;40th National Conference on Theoretical Physics

物理学;计算机科学

Tan, V.H.^1 ; Son, P.N.^2

Agency for Radiation and Nuclear Safety, 113-Tran Duy Hung, Hanoi, Viet Nam^1

Nuclear Research Institute, 01-Nguyen Tu Luc, Dalat, Viet Nam^2

关键词: Activation method;    Coincidence-summing;    Correction factors;    Irradiated samples;    Optimal composition;    Radiative capture;    Self shielding effect;    Thermal neutrons;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/726/1/012004/pdf
DOI  :  10.1088/1742-6596/726/1/012004

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The thermal neutron radiative capture cross section for186W(n, γ)187W reaction was measured by the activation method using the filtered neutron beam at the Dalat research reactor. An optimal composition of Si and Bi, in single crystal form, has been used as neutron filters to create the high-purity filtered neutron beam with Cadmium ratio of Rcd= 420 and peak energy En= 0.025 eV. The induced activities in the irradiated samples were measured by a high resolution HPGe digital gamma-ray spectrometer. The present result of cross section has been determined relatively to the reference value of the standard reaction197Au(n, γ)198Au. The necessary correction factors for gamma-ray true coincidence summing, and thermal neutron self-shielding effects were taken into account in this experiment by Monte Carlo simulations.