Cross section measurements for(n,2n),(n,α),and(n,p)reactions on rhenium isotopes around 14 MeV neutrons and their theoretical calculations of excitation functions  

作　　者：Fengqun Zhou Yueli Song Xinyi Chang Yong Li Shuqing Yuan Pengfei Ji Mingli Tian 周丰群;宋月丽;畅心怡;李勇;袁书卿;姬鹏飞;田明丽(School of Electrical and Mechanical Engineering,Pingdingshan University,Pingdingshan 467000,China;Henan Key Laboratory of Research for Central Plains Ancient Ceramics,Pingdingshan University,Pingdingshan 467000,China)

机构地区：[1]School of Electrical and Mechanical Engineering,Pingdingshan University,Pingdingshan 467000,China [2]Henan Key Laboratory of Research for Central Plains Ancient Ceramics,Pingdingshan University,Pingdingshan 467000,China

出　　处：《Chinese Physics C》2021年第7期195-204,共10页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(11605099,11575090)。

摘　　要：Cross-section data of the^(185)Re(n,2n)^(184)mRe,^(185)Re(n,2n)^(184)gRe,^(185)Re(n,α)182m1+m2+gTa,^(187)Re(n,2n)^(186)g,(m)Re,^(187)Re(n,α)^(184)Ta,and^(187)Re(n,p)^(187)W reactions were measured at four neutron energies,namely 13.5,14.1,14.4,and 14.8 MeV,by means of the activation technique,relative to the reference cross-section values of the 93Nb(n,2n)92mNb reaction.The neutrons were generated from the T(d,n)4He reaction at the K-400 Neutron Generator at China Academy of Engineering Physics.The inducedγactivities were measured using a high-resolutionγ-ray spectrometer equipped with a coaxial high-purity germanium detector.The excitation functions of the six above-mentioned nuclear reactions at neutron energies from the threshold to 20 MeV were calculated by adopting the nuclear theoretical model program system Talys-1.9 with the relevant parameters properly adjusted.The measured cross sections were analyzed and compared with previous experiments conducted by other researchers,and with the evaluated data of BROND-3.1,ENDF/B-VIII.0,JEFF-3.3,and the theoretical values based on Talys-1.9.The new measured results agree with those of previous experiments and the theoretical excitation curve at the corresponding energies.The theoretical excitation curves based on Talys-1.9 generally match most of experimental data well.

关 键 词：cross sections of(n 2n) (n a)and(n p)reactions rhenium isotopes activation technique off-line y-ray spectrometry theoretical calculations 

分 类 号：O571.5[理学—粒子物理与原子核物理]