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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

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Chinese Physics C 2021年第7期45卷 195-204页

作者： Fengqun Zhou yueli Song Xinyi Chang yong Li Shuqing yuan Pengfei Ji Mingli Tian School of Electrical and Mechanical Engineering Pingdingshan UniversityPingdingshan 467000China Henan Key Laboratory of Research for Central Plains Ancient Ceramics Pingdingshan UniversityPingdingshan 467000China

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 *** neutrons were generated from the T(d,n)4He reaction at the K-400 Neutron Generator at China Academy of Engineering *** inducedγactivities were measured using a high-resolutionγ-ray spectrometer equipped with a coaxial high-purity germanium *** 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 *** 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 *** new measured results agree with those of previous experiments and the theoretical excitation curve at the corresponding *** 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

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