New experimental measurement of natSe(n, γ) cross section between 1 eV to 1 keV at the CSNS Back-n facility

• Published in: Chinese physics B 2022-07, Vol.31 (8), p.127-134
• Main Authors: Hu, Xin-Rong, Liu, Long-Xiang, Jiang, Wei, Ren, Jie, Fan, Gong-Tao, Wang, Hong-Wei, Cao, Xi-Guang, Song, Long-Long, Liu, Ying-Du, Zhang, Yue, Li, Xin-Xiang, Hao, Zi-Rui, Kuang, Pan, Wang, Xiao-He, Hu, Ji-Feng, Jiang, Bing, Wang, De-Xin, Zhang, Suyalatu, An, Zhen-Dong, Wang, Yu-Ting, Ma, Chun-Wang, He, Jian-Jun, Su, Jun, Zhang, Li-Yong, Yang, Yu-Xuan, Jin, Sheng, Chen, Kai-Jie
• Format: Article
• Language: English
• Subjects: cross section; CSNS Back-n facility; detectors; matrix; resolved resonance region; Se(n
• ISSN: 1674-1056
• DOI: 10.1088/1674-1056/ac6ee2

The 74 Se is one of 35 p-nuclei,and 82 Se is a r-process only nucleus,and their(n,γ)cross sections are vital input parameters for nuclear astrophysics reaction network calculations.The neutron capture cross section in the resonance range of isotopes and even natural selenium samples has not been measured.Prompt γ-rays originating from neutron-induced capture events were detected by four C6D6 liquid scintillator detectors at the Back-n facility of China Spallation Neutron Source(CSNS).The pulse height weighting technique(PHWT)was used to analyze the data in the 1 eV to 100 keV region.The deduced neutron capture cross section was compared with ENDF/B-Ⅷ.0,JEFF-3.2,and JENDL-4.0,and some differences were found.Resonance parameters were extracted by the R-matrix code SAMMY in the 1 eV-1 keV region.All the cross sections of natSe and resonance parameters are given in the datasets.The datasets are openly available at http://www.doi.org/10.1 1922/sciencedb.j001 13.00019.