https://doi.org/10.1140/epja/i2019-12698-1
Regular Article - Experimental Physics
Activation cross-sections for the 185Re(n, 2n) reaction and the isomeric cross-section ratio of 184m,gRe in the neutron energy range of 13–15 MeV
1
Institute of New Energy, Hexi University, 734000, Zhangye, China
2
School of Physics and Electromechanical Engineering, Hexi University, 734000, Zhangye, China
3
Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, 621900, Mianyang, China
* e-mail: luojh71@163.com
Received:
18
November
2018
Accepted:
19
January
2019
Published online:
25
February
2019
Cross-sections and their isomeric ratios (
) for the 185Re(n, 2n)184mRe and 185Re(n, 2n)184gRe reactions in the 13–15 MeV range were measured. The neutron activation technique was applied using the K-400 neutron generator at the Chinese Academy of Engineering Physics (CAEP). Natural Re samples and Nb monitor foils were activated jointly to determine the reaction cross-section and the incident neutron flux. The 3H(d, n)4He reaction was used to generate the neutron beam. The pure cross-section of the ground state was derived from the absolute cross-section of the metastable state using residual nuclear decay analysis. Numerical calculations using the nuclear-model-based computer code TALYS-1.8 with six level density models were used to obtain 185Re(n, 2n)184m, gRe reaction excitation functions and their isomeric cross-section ratios. Finally, experimentally determined cross-sections were compared with corresponding literature data.
© The Author(s), 2019
