Effective extraction of photoneutron cross-section distribution using gamma activation and reaction yield ratio method  

作　　者：Zhi‑Cai Li Yue Yang Zong‑Wei Cao Xin‑Xiang Li Yun Yuan Zong‑Qing Zhao Gong‑Tao Fan Hong‑Wei Wang Wen Luo 

机构地区：[1]School of Nuclear Science and Technology,University of South China,Hengyang 421001,China [2]Science and Technology on Plasma Physics Laboratory,Laser Fusion Research Center,China Academy of Engineering Physics,Mianyang 621900,China [3]Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210,China

出　　处：《Nuclear Science and Techniques》2023年第11期103-111,共9页核技术（英文）

基　　金：This work was supported by the National Key R&D Program of China(No.2022YFA1603300);the National Natural Science Foundation of China(Nos.U2230133);the Independent Research Project of the Key Laboratory of Plasma Physics,CAEP(No.JCKYS2021212009);the Open Fund of the Key Laboratory of Nuclear Data,CIAE(No.JCKY2022201C152);Hengyang Municipal Science and Technology Project(No.202150054076).

摘　　要：Photoneutron cross-section(PNCS)data are important in various current and emerging applications.Although a few sophis-ticated methods have been developed,there is still an urgent need to study the PNCS data.In this study,we propose the extraction of PNCS distributions using a combination of gamma activation and reaction yield ratio methods.To verify the validity of the proposed extraction method,experiments for generating^(62,64)Cu and^(85m,87m)Sr isotopes via laser-induced pho-toneutron reactions were performed,and the reaction yields of these isotopes were obtained.Using the proposed extraction method,the PNCS distributions of^(63)Cu and^(86)Sr isotopes(leading to^(85m)Sr isotope production)were successfully extracted.These extracted PNCS distributions were benchmarked against available PNCS data or TALYS calculations,demonstrating the validity of the proposed extraction method.Potential applications for predicting the PNCS distributions of the 30 iso-topes are further introduced.We conclude that the proposed extraction method is an effective complement to the available sophisticated methods for measuring and evaluating PNCS data.

关 键 词：Photonuclear data Photoneutron cross section Gamma activation Reaction yield TALYS calculation 

分 类 号：O571[理学—粒子物理与原子核物理]