Ab initio single-neutron spectroscopic overlaps in lithium isotopes
Ab initio single-neutron spectroscopic overlaps in lithium isotopes
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DOI：
10.1103/physrevc.108.054303
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发表时间：
2022-10
影响因子：
3.1
通讯作者：
G. Sargsyan;K. Launey;R. Shaffer;S. Marley;N. Dudeck;A. Mercenne;T. Dytrych;J. Draayer
中科院分区：
文献类型：
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作者：
G. Sargsyan;K. Launey;R. Shaffer;S. Marley;N. Dudeck;A. Mercenne;T. Dytrych;J. Draayer
我们计算单中子光谱重叠的锂同位素的\textit{ab initio}的自适应无核壳模型的框架。我们报告了相关的中子-核渐近归一化系数（ANC）和光谱因子（SF），这是许多反应截面计算中的重要成分。虽然光谱因子传统上是从实验截面中提取的，但它们对反应类型、能量和基础模型的敏感性表明需要从第一原理结构考虑确定SF。作为说明性的例子，我们提出了$^6$Li+n，$^7$Li+n，和$^8$Li+n，我们表明，结果是在一个很好的协议与其他的从头算方法，在可用的情况下，包括量子蒙特卡罗方法。我们比较ANCs和SF的实验推导值，以期扩大这项研究更重的核和提取集群间的有效相互作用输入到现有和未来的实验数据的分析。
We calculate single-neutron spectroscopic overlaps for lithium isotopes in the framework of the \textit{ab initio} symmetry-adapted no-core shell model. We report the associated neutron-nucleus asymptotic normalization coefficients (ANCs) and spectroscopic factors (SFs) that are important ingredients in many reaction cross section calculations. While spectroscopic factors have been traditionally extracted from experimental cross sections, their sensitivity on the type of reactions, energy, and the underlying models point to the need for determining SF from first-principle structure considerations. As illustrative examples, we present $^6$Li+n, $^7$Li+n, and $^8$Li+n, and we show that the results are in a good agreement with those of other \textit{ab initio} methods, where available, including the quantum Monte Carlo approach. We compare ANCs and SFs to available experimentally deduced values, with a view toward expanding this study to heavier nuclei and to extracting inter-cluster effective interactions for input into analyses of existing and future experimental data.