Cross-section measurements for 58,60,61Ni(n,α)55,57,58Fe reactions in the 4.50-5.50 MeV neutron energy region

作     者：Haoyu Jiang Zengqi Cui Yiwei Hu Jie Liu Jinxiang Chen Guohui Zhang Yu.M.Gledenov E.Sansarbayar G.Khuukhenkhuu L.Krupa I.Chuprakov 江浩雨;崔增琪;胡益伟;刘杰;陈金象;张国辉;Yu.M.Gledenov;E.Sansarbayar;G.Khuukhenkhuu;L.Krupa;I.Chuprakov

作者机构：State Key Laboratory of Nuclear Physics and TechnologyInstitute of Heavy Ion PhysicsPeking UniversityBeijing 100871China Frank Laboratory of Neutron PhysicsJoint Institute for Nuclear ResearchDubna 141980Russia Nuclear Research CentreNational University of MongoliaUlaanbaatar 210646Mongolia Flerov Laboratory of Nuclear ReactionsJoint Institute for Nuclear ResearchDubna 141980Russia Institute of Experimental and Applied PhysicsCzech Technical University in PragueHorska 3a/22Prague 212800Czech Republic 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2020年第44卷第11期

页      面：138-149页

核心收录：

学科分类：08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 

基　　金：Supported by the National Natural Science Foundation of China(11775006) China Nuclear Data Center and the Science and Technology on Nuclear Data Laboratory 

主　　题：58,60,61Ni(n,α)55,57,58Fe reactions cross sections GIC 

摘      要：The cross sections at 5 energy points of the 58Ni(n,α)55Fe reaction were measured in the 4.50 MeV≤En≤5.50 MeV region while those for the 60Ni(n,α)57Fe and 61Ni(n,α)58Fe reactions were measured at En=5.00 and 5.50 MeV using the 4.5 MV Van de Graaff accelerator at Peking University.A gridded twin ionization chamber(GIC)was used as the detector,and enriched 58Ni,60Ni,and 61Ni foil samples were prepared and mounted at the sample changer of the *** highly enriched 238U3O8 samples inside the GIC were used to determine the relative and absolute neutron *** neutron energy spectra were obtained through unfolding the pulse height spectra measured by the EJ-309 liquid *** interference from the low-energy neutrons and impurities in the samples has been *** present data of the 60Ni(n,α)57Fe reaction are the first measurement results below 6.0 MeV,and those of the 61Ni(n,α)58Fe reactions are the first measurement results in the MeV *** present results have been compared with existing measurements,evaluations,and TALYS-1.9 calculations.