arXiv · 2510.22965
Neutron capture measurement of the 165Ho at the CSNS Backn facility in the resonance energy region
Abstract
The neutron capture yield of 165Ho have been measured at the Back-streaming White neutron beam line (Back-n) of the China Spallation Neutron Source (CSNS) using a 4{\pi} BaF2 Gamma Total Absorption Facility (GTAF). The resonance shapes in the 1eV to 1.0keV region were analyzed with the Bayesian R-matrix code SAMMY. For 18 s-wave resonances below 100eV, the resonance energy ER, neutron width {\Gamma}n, and radiative width {\Gamma}{\gamma} were extracted. The statistical analyses of the resonance parameters show that the nearest-neighbour level-spacing distribution follows a Wigner-Dyson form with mean spacing D0 = 4.53(3)eV,indicating chaotic compound-nucleus behaviour; Using the extracted parameters, the s-wave neutron strength function for 165Ho was derived to be 10-4S0 = 2.01(1), in excellent agreement with the values reported in both the Atlas of Neutron Resonances and ENDF/B-VIII.0 data.
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De-Xin Wang, Su-Ya-La-Tu Zhang, Wei Jiang, Rui-Rui Fan, Qi-Wei Zhang, Jie Ren, Jin-Cheng Wang, Guang-Yuan Luan, Xiao-Guang Wu, Bao-Hua Sun, Zhen-Xiang Zhou, Hong-Yi Wu, Zhi-Yang He, Cong-Bo Li, Qi Sun, Xuan Pang, Mei-Rong Huang, Guo Li, Gerile Bao, Xi-Chao Ruan. 2025-10-27. Neutron capture measurement of the 165Ho at the CSNS Backn facility in the resonance energy region. https://arxiv.org/abs/2510.22965
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