摘要
近垒能区弱束缚核的反应动力学是目前核物理研究热点之一。本工作使用大立体角硅探测器阵列测量了^(7)Be+^(120)Sn体系在48.05 MeV的准弹性散射,结合蒙特卡罗模拟得到其微分截面。基于光学模型,分别用频率方法和贝叶斯方法对角分布进行拟合。在前角区,两种方法给出了一致的结果;在后角区,频率方法的结果呈现明显的振荡结构,而贝叶斯方法的结果较为平滑,在靠近180°有振荡上升的趋势。
The reaction kinetics of weakly bound nuclei in the nearbarrier energy region is currently one of the hotspots in nuclear physics research.The quasielastic scattering of the^(7)Be+^(120)Sn system at 48.05 MeV was measured using a large solid angle covered silicon detector array,and its differential cross section was obtained in combination with Monte Carlo simulations.Based on the optical model,the angular distributions were fitted by the frequentist method and the Bayesian method,respectively.At the forward angles,the two methods give consistent results;at the backward angles,the results of the frequentist method show an obvious oscillatory structure,while the results of the Bayesian method are smooth,with an oscillatory upward trend near 180°.
作者
常昶
杨磊
林承键
杨彦云
温培威
骆天鹏
马军兵
许世伟
王康
段芳芳
马南茹
贾会明
杨峰
黄大湖
张明昊
杨过
杨赟
莫腾欢
CHANG Chang;YANG Lei;LIN Chengjian;YANG Yanyun;WEN Peiwei;LUO Tianpeng;MA Junbing;XU Shiwei;WANG Kang;DUAN Fangfang;MA Nanru;JIA Huiming;YANG Feng;HUANG Dahu;ZHANG Minghao;YANG Guo;YANG Yun;MO Tenghuan(China Institute of Atomic Energy,Beijing 102413,China;College of Physics and Technology&Guangxi Key Laboratory of Nuclear Physics and Technology,Guangxi Normal University,Guilin 541004,Guangxi,China;Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China)
出处
《原子核物理评论》
CAS
CSCD
北大核心
2023年第3期356-361,共6页
Nuclear Physics Review
基金
国家重点研发计划项目(2018YFA0404404)
国家自然科学基金资助项目(12235020,U2167204,12175313,12175314,U1732145,U1867212和119611012)
稳定支持基础科研计划
中核集团领创项目(LC192209000701,LC202309000201)
青年人才发展基金项目(YC2122120001)
国防基础科研计划项目(JCKY2020201C002)
关键词
近垒能区
弱束缚核
准弹性散射角分布
光学模型
频率方法
贝叶斯方法
energy near the Coulomb barrier
weakly bound nucleus
quasielastic scattering angular distribution
optical model
frequentist approach
bayesian method
