New measurement of the neutron-induced total cross-sections of nat Cr in a wide energy range on the Back-n at CSNS

• Published in: Chinese physics C 2024-10, Vol.48 (10), p.104002
• Main Authors: Li 李, Baoqian 宝钱, Xiao 肖, Min 敏, Chen 陈, Yonghao 永浩, Xue 薛, Jieming 洁明, Li 李, Xinxiang 鑫祥, Yi 易, Han 晗, Cheng 程, Pinjing 品晶, Liu 刘, Rong 荣, Yang 羊, Yiwei 奕伟, Han 韩, Zijie 子杰, Zhao 赵, Dajun 大俊, Wang 王, Haoqiang 豪强, Zhao 赵, Jirong 继荣, Luan 栾, Peng 鹏, Liu 刘, Jing 静, Liu 刘, Zijun 梓隽, Chen 陈, Chaomin 朝敏, Luo 罗, Wen 文, Zheng 郑, Bo 波, Feng 冯, Song 松
• Format: Article
• Language: English
• ISSN: 1674-1137; 2058-6132
• DOI: 10.1088/1674-1137/ad66c0

The neutron total cross-section of Cr plays a crucial role in new nuclear engineering design and fundamental science. A new measurement of the neutron-induced total cross-sections of Cr was performed using the transmission method on the back-streaming white neutron beamline (Back-n) at the China Spallation Neutron Source (CSNS). The neutron energy was determined using the time-of-flight technique. The neutron total cross-sections of Cr were obtained across a broad energy range (0.3 eV−20 MeV) in one experiment for the first time. The resulting effective total cross-sections were compared with the existing experimental data in different energy ranges, which revealed good agreement with the evaluated libraries. Theoretical calculation of the total cross-section in the energy range of 1.5 to 20 MeV was then conducted using TALYS-1.96 and compared with the present results. The measurement provides a high-quality total cross-section of Cr, including detailed uncertainty data across a wide energy range, offering a valuable reference for nuclear data re-evaluation and nuclear engineering design.