Cross-sections for(n,2n),(n,α),(n,p),(n,d),and(n,t)reactions on molybdenum isotopes in the neutron energy range of 13 to 15 MeV  

作　　者：Junhua Luo Li Jiang 罗均华;蒋励(Institute of New Energy,Hexi University,Zhangye 734000,China;School of Physics and Electromechanical Engineering,Hexi University,Zhangye 734000,China;Institute of Nuclear Physics and Chemistry,Chinese Academy of Engineering Physics,Mianyang 621900,China)

机构地区：[1]Institute of New Energy,Hexi University,Zhangye 734000,China [2]School of Physics and Electromechanical Engineering,Hexi University,Zhangye 734000,China [3]Institute of Nuclear Physics and Chemistry,Chinese Academy of Engineering Physics,Mianyang 621900,China

出　　处：《Chinese Physics C》2020年第11期94-108,共15页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China(11875016,11565012,11165007)。

摘　　要：Given the insufficient cross-sectional data regarding the 14-MeV-neutron experiment of molybdenum,the vital fusion reactor structural material,and the significant heterogeneities among the reported values,this study examined the(n,2n),(n,α),(n,p),(n,d),and(n,t)reaction cross sections in molybdenum isotopes based on the neutrons produced via a T(d,n)4He reaction carried out in the Pd-300 Neutron Generator at the China Academy of Engineering Physics(CAEP).A high-resolution gamma-ray spectrometer,which was equipped with a coaxial high-purity germanium detector,was used to measure the product nuclear gamma activities.In addition,27Al(n,α)24Na and 93Nb(n,2n)92mNb reactions were utilized as the neutron fluence standards.The experimental 92Mo(n,2n)91Mo,94Mo(n,2n)93mMo,100Mo(n,2n)99Mo,98Mo(n,α)95Zr,100Mo(n,α)97Zr,92Mo(n,p)92mNb,96Mo(n,p)96Nb,97Mo(n,p)97Nb,98Mo(n,p)98mNb,92Mo(n,d)91mNb,and 92Mo(n,t)90Nb reaction cross sections were acquired within the 13-15 MeV neutron energy range.Thereafter,we compared and analyzed these obtained cross sections based on the existing IAEA-EXFOR database-derived experimental data,together with evaluation results corresponding to ENDF/B-Ⅷ.0,JEFF-3.3,BROND-3.1,and CENDL-3.1 and the theoretical outcomes acquired through TALYS-1.95 and EMPIRE-3.2.3(nuclear-reaction modeling tools).

关 键 词：neutron-induced reaction cross sections of Mo excitation function molybdenum isotopes D+T neutron source off-lineγ-ray spectrometry TALYS-1.95 and EMPIRE-3.2.3 

分 类 号：O571.5[理学—粒子物理与原子核物理]