DOAJ Open Access 2023

Progress in measurements of fission cross sections and total cross sections at CSNS Back-n white neutron source

Rong Liu Yiwei Yang Zhizhou Ren Zhongwei Wen Jie Wen +77 lainnya

Abstrak

The neutron-induced cross sections are of great significance for the design of nuclear devices and advanced reactors for the nuclear energy production. At CSNS Back-n white neutron source, new measurements of the fission cross sections and total cross sections are performed with two sets of Day-one spectrometers based on the multi-cell fast fission ionization chamber (FIC). The neutron-induced 236,238U fission cross sections relative to 235U from the fission threshold energy to 200 MeV were measured by using the TOF method and the Fast Ionization Chamber Spectrometer for Fission Cross Section Measurement (FIXM) in the single/double bunch mode of Back-n. The experimental uncertainties are analyzed in detail, and the results from the two modes are consistent. The measured 236,238U/235U fission cross section ratios are compared with previous experiments and evaluations. The 236,238U(n,f) cross sections are obtained based on the standard 235U fission cross section. The neutron total cross sections of carbon and aluminum in the energy region from 1 eV to 20 MeV have been measured by using the TOF method and transmission method based on the Neutron Total Cross Section Spectrometer (NTOX) in the double bunch mode. The total cross section results after unfolding are in good agreement with the previous measurements as well as the broadening of the ENDF/B-Ⅷ.0 evaluation with Gaussian function within the experimental uncertainty. The present results provide the experimental data for further measurements, relevant evaluations and the design of nuclear system.

Topik & Kata Kunci

Nuclear engineering. Atomic power Nuclear and particle physics. Atomic energy. Radioactivity

Penulis (82)

Rong Liu

Yiwei Yang

Zhizhou Ren

Zhongwei Wen

Jie Wen

Xingyan Liu

Yonghao Chen

Han Yi

Zijie Han

Qiping Chen

Jie Bao

Qi An

Huaiyong Bai

Ping Cao

Pinjing Cheng

Zengqi Cui

Ruirui Fan

Changqing Feng

Minhao Gu

Fengqin Guo

Changcai Han

Guozhu He

Yongcheng He

Yuefeng He

Hanxiong Huang

Weiling Huang

Xiru Huang

Xiaolu Ji

Xuyang Ji

Haoyu Jiang

Wei Jiang

Hantao Jing

Ling Kang

Mingtao Kang

Bo Li

Lun Li

Qiang Li

Xiao Li

Yang Li

Shubin Liu

Guangyuan Luan

Yinglin Ma

Changjun Ning

Binbin Qi

Jie Ren

Xichao Ruan

Zhaohui Song

Hong Sun

Xiaoyang Sun

Zhijia Sun

Zhixin Tan

Hongqing Tang

Jingyu Tang

Pengcheng Wang

Qi Wang

Taofeng Wang

Yanfeng Wang

Zhaohui Wang

Zheng Wang

Qingbiao Wu

Xiaoguang Wu

Xuan Wu

Likun Xie

Li Yu

Tao Yu

Yongji Yu

Guohui Zhang

Jing Zhang

Linhao Zhang

Liying Zhang

Qingmin Zhang

Qiwei Zhang

Xianpeng Zhang

Yuliang Zhang

Zhiyong Zhang

Yingtan Zhao

Liang Zhou

Zuying Zhou

Danyang Zhu

Kejun Zhu

Peng Zhu

Format Sitasi

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Liu, R., Yang, Y., Ren, Z., Wen, Z., Wen, J., Liu, X. et al. (2023). Progress in measurements of fission cross sections and total cross sections at CSNS Back-n white neutron source. https://doi.org/10.1016/j.nucana.2023.100073

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Informasi Jurnal

Tahun Terbit: 2023
Sumber Database: DOAJ
DOI: 10.1016/j.nucana.2023.100073
Akses: Open Access ✓