Activation cross section and isomeric cross-section ratio for the (n,2n) reaction on 132,134Ba-Reference-Cited by-同舟云学术

Activation cross section and isomeric cross-section ratio for the (n,2n) reaction on 132,134Ba

Published:2017-04-19 Issue:10 Volume:105 Page:779-787
ISSN:2193-3405
Container-title:Radiochimica Acta
language:en
Short-container-title:

Author:

Luo Junhua¹²,Wu Chunlei³,Jiang Li³,Li Suyuan²

Affiliation:

1. School of Physics and Electromechanical Engineering , Hexi University , Zhangye 734000 , China , Tel.: +86 936-8283290, Fax: +86 936-8283290

2. Institute of New Energy , Hexi University , Zhangye 734000 , China

3. Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics , Mianyang 621900 , China

Abstract

Abstract Cross sections of the 132Ba(n,2n)131m,gBa and 134Ba(n,2n)133m,gBa reactions and their isomeric cross section ratios σm/σg have been measured by means of the activation technique at three neutron energies in the range 13−15 MeV. BaCO3 samples and Nb monitor foils were activated together to determine the reaction cross section and the incident neutron flux. The quasimonoenergetic neutrons beam were produced via the 3H(d,n)4He reaction at the Pd-300 Neutron Generator of the Chinese Academy of Engineering Physics (CAEP). The activities induced in the reaction products were measured using high−resolution γ ray spectroscopy. The pure cross section of the ground-state was derived from the absolute cross section of the metastable state and the residual nuclear decay analysis. Cross sections were also evaluated theoretically using the numerical nuclear model code, TALYS-1.8 with different level density options at neutron energies varying from the reaction threshold to 20 MeV. Results are discussed and compared with the corresponding literature.

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry

Link

https://www.degruyter.com/document/doi/10.1515/ract-2017-2768/pdf

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