Theoretical analysis of the double-differential cross-sections of neutron,proton,deuteron,^(3)He,andαfor the p+^(6) Li reaction  

作　　者：Fang-Lei Zou Xiao-Jun Sun Jing-Shang Zhang Hai-Rui Guo Yin-Lu Han Rui-Rui Xu Xi Tao Ji-Min Wang Xiao-Dong Sun Yuan Tian Tao Ye Yong-Li Xu Chun-Tian Liang 

机构地区：[1]College of Physics,Guangxi Normal University,541004 Guilin,China [2]Guangxi Key Laboratory of Nuclear Physics and Nuclear Technology,541004 Guilin,China [3]China Institute of Atomic Energy,P.O.Box 275(41),102413 Beijing,China [4]Institute of Applied Physics and Computational Mathematics,10094 Beijing,China [5]College of Physics and Electronic,Shanxi Datong University,037009 Datong,China [6]School of Science,Tianjin Chengjian University,300384 Tianjin,China

出　　处：《Nuclear Science and Techniques》2024年第3期181-197,共17页核技术（英文）

基　　金：supported by the National Natural Science Foundation of China(No.12065003);the Guangxi Key R&D Project(2023AB07029);the Scientific Research and Technology Development Project of Guilin(20210104-2);the Central Government Guides Local Scientific and Technological Development Funds of China(Guike ZY22096024)。

摘　　要：Based on the unified Hauser–Feshbach and exciton model,which can describe the particle emission processes between discrete energy levels with energy,angular momentum,and parity conservations,a statistical theory of light nucleus reaction(STLN)is developed to calculate the double-differential cross-sections of the outgoing neutron and light charged particles for the proton-induced^(6) Li reaction.A significant difference is observed between the p+^(6) Li and p+^(7) Li reactions owing to the discrepancies in the energy-level structures of the targets.The reaction channels,including sequential and simultaneous emission processes,are analyzed in detail.Taking the double-differential cross-sections of the outgoing proton as an example,the influence of contaminations(such as^(1) H,^(7)Li,^(12)C,and^(16)O)on the target is identified in terms of the kinetic energy of the first emitted particles.The optical potential parameters of the proton are obtained by fitting the elastic scattering differential cross-sections.The calculated total double-differential cross-sections of the outgoing proton and deuteron at E_(p)=14 MeV agree well with the experimental data for different outgoing angles.Simultaneously,the mixed double differential cross-sections of^(3) He andαare in good agreement with the measurements.The agreement between the measured data and calculated results indicates that the two-body and three-body breakup reactions need to be considered,and the pre-equilibrium reaction mechanism dominates the reaction processes.Based on the STLN model,a PLUNF code for the p+^(6) Li reaction is developed to obtain an ENDF-6-formatted file of the double-differential cross-sections of the nucleon and light composite charged particles.

关 键 词：Statistical theory of light nucleus reaction p+^(6)Li reaction Light composite charged particle Double-differential cross-sections Two-body breakup Three-body breakup 

分 类 号：O571[理学—粒子物理与原子核物理]