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New experimental measurement of nat Se(n, Îł) cross section between 1 eV to 1 keV at the CSNS Back-n facility.

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Title: New experimental measurement of nat Se(n, Îł) cross section between 1 eV to 1 keV at the CSNS Back-n facility.
Authors: Hu, Xin-Rong1,2 (AUTHOR), Liu, Long-Xiang3 (AUTHOR) liulongxiang@zjlab.org.cn, Jiang, Wei4,5 (AUTHOR), Ren, Jie6 (AUTHOR), Fan, Gong-Tao1,2,3 (AUTHOR) fangongtao@zjlab.org.cn, Wang, Hong-Wei1,2,3 (AUTHOR) wanghongwei@zjlab.org.cn, Cao, Xi-Guang1,3 (AUTHOR), Song, Long-Long3 (AUTHOR), Liu, Ying-Du7 (AUTHOR), Zhang, Yue4,5 (AUTHOR), Li, Xin-Xiang1,2 (AUTHOR), Hao, Zi-Rui1,2 (AUTHOR), Kuang, Pan1,2 (AUTHOR), Wang, Xiao-He1 (AUTHOR), Hu, Ji-Feng1 (AUTHOR), Jiang, Bing1,2 (AUTHOR), Wang, De-Xin8 (AUTHOR), Zhang, Suyalatu8 (AUTHOR), An, Zhen-Dong9 (AUTHOR), Wang, Yu-Ting10 (AUTHOR)
Source: Chinese Physics B. Aug2022, Vol. 31 Issue 8, p1-8. 8p.
Subjects: Neutron capture, Liquid scintillators, Nuclear astrophysics, Nuclear reactions, Neutron sources, Resonance
Geographic Terms: China
Abstract: The 74Se is one of 35 p-nuclei, and 82Se is a r-process only nucleus, and their (n, Îł) 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 Îł -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 eVâ€"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/10.11922/sciencedb.j00113.00019. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:The 74Se is one of 35 p-nuclei, and 82Se is a r-process only nucleus, and their (n, Îł) 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 Îł -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 eVâ€"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/10.11922/sciencedb.j00113.00019. [ABSTRACT FROM AUTHOR]
ISSN:16741056
DOI:10.1088/1674-1056/ac6ee2