Mirror nucleon removal reactions in p -shell nuclei
Mirror nucleon removal reactions in p -shell nuclei
复制标题
p 壳核中的镜像核子去除反应
DOI：
10.1103/physrevc.105.034314
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发表时间：
2022
影响因子：
3.1
通讯作者：
Brown, J.
中科院分区：
文献类型：
--
作者：
Kuchera, A. N.;Bazin, D.;Phan, T.;Tostevin, J. A.;Babo, M.;Baumann, T.;Bender, P. C.;Bowry, M.;Bradt, J.;Brown, J.
核子去除反应已被证明是研究原子核单粒子结构的有效工具。本工作将继续对使用微观核结构输入来计算去除反应截面的反应和结构模型进行实验探测和基准测试。进行了三种不同的单核子去除反应，分别是质量为9和10的壳核。反应的残核与射线重合，以确定个别终态的部分截面。斜向直接反应模型与微观变分蒙特卡罗计算的重叠函数和剩余核密度相结合，为部分截面计算提供一致的核结构输入。比较测量和计算的截面，包括镜像反应，提出。对导致基态的部分截面的分析显示了与使用壳模型核结构输入的包含截面分析所观察到的相似的行为：去除弱束缚核子时的理论描述比去除良好束缚核子时的数据更符合数据。本文给出的两个镜像反应对在各自的反应对成员之间显示出一致的结果。然而，激发态总体的结果显示出一种系统的不同趋势，这种趋势似乎与计算的结构部分有关。需要更多的案例来更好地理解结构和动力效应在偏差中的各自作用。
Nucleon removal reactions have been shown to be an effective tool for studying the single particle structure of nuclei. This work continues efforts to experimentally probe and benchmark the reaction and structure models used to calculate the removal reaction cross sections when using microscopic nuclear structure inputs. Three different single nucleon removal reactions were performed, from-shell nuclei with masses, 9, and 10. The residual nuclei from the reactions were detected in coincidence withrays to determine partial cross sections to individual final states. The eikonal direct-reaction model is combined with overlap functions and residual nucleus densities from microscopic, variational Monte Carlo calculations to provide consistent nuclear structure input to the partial cross section calculations. Comparisons of measured and calculated cross sections, including for mirror reactions, are presented. The analysis of the partial cross sections leading to the ground states shows a similar behavior to the one observed from analyses of inclusive cross sections using shell model nuclear structure input: the theoretical description of the removal process is in better agreement with the data when removing weakly bound nucleons, than when removing well-bound ones. The two mirror reaction pairs presented here show consistent results between the respective members of the pairs. The results obtained for the population of the excited states, however, show a systematically different trend that appears connected to the structure part of the calculation. Additional cases are needed to better understand the respective roles of structure and dynamical effects in the deviations.