Resonance analysis of^(159)Tb(n,γ)reaction based on the CSNS Back-n experiment  

作　　者：De-Xin Wang Su-Ya-La-Tu Zhang Wei Jiang Jie Ren Mei-Rong Huang Jing-Yu Tang Xi-Chao Ruan Hong-Wei Wang Long-Xiang Liu Xue Li Dan-Dan Niu Guo Li Gu-Fu Meng Yong-Shun Huang Zhi-Long Wang Yu Bai Xue Yang 

机构地区：[1]College of Physics and Electronics,and Institute of Nuclear Physics,Inner Mongolia Minzu University,Tongliao 028043,China [2]Inner Mongolia Joint Key Laboratory of Nuclear and Radiation Detection,Tongliao 028043,China [3]Chinese Academy of Sciences,Institute of High Energy Physics,Beijing 10049,China [4]Spallation Neutron Source Science Center,Dongguan 523803,China [5]Key Laboratory of Nuclear Data,China Institute of Atomic Energy,Beijing 102413,China [6]School of Nuclear Science and Technology,University of Science and Technology of China,Hefei 230026,China [7]Chinese Academy of Sciences,Shanghai Advanced Research Institute,Shanghai 201210,China [8]Center for Theoretical Physics,China Institute of Atomic Energy,Beijing 102413,China

出　　处：《Nuclear Science and Techniques》2025年第3期85-94,共10页核技术(英文)

基　　金：supported by the National Natural Science Foundation of China(Nos.12365018,U2032146,12465024);Natural Science Foundation of Inner Mongolia(Nos.2023MS01005,2024ZD23,2024FX30);the program of Innovative Research Team and Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region(Nos.NMGIRT2217,NJYT23109)。

摘　　要：The neutron capture resonance parameters for 159Tb are crucial for validating nuclear models,nucleosynthesis during the neutron capture process,and nuclear technology applications.In this study,resonance analyses were performed for the neutron capture cross sections of 159Tb measured at the China Spallation Neutron Source(CSNS)backscattering white neutron beamline(Back-n)facility.The resonance parameters were extracted from the R-Matrix code SAMMY and fitted to the experimental capture yield up to the 1.2 keV resolved resonance region(RRR).The average resonance parameters were determined by performing statistical analysis on the set of the resonance parameters in the RRR.These results were used to fit the measured average capture cross sections using the FITACS code in the unresolved resonance region from 2 keV to 1 MeV.The contributions of partial waves l=0,1,2 to the average capture cross sections are reported.

关 键 词：Statistical analysis Resonance parameters ^(159)Tb(n γ)cross section γ 

分 类 号：O57[理学—粒子物理与原子核物理]