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arXiv 2006.00713nucl-th
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核景观中热核反应的网络结构

Network structure of thermonuclear reactions in nuclear landscape

H. L. Liu, D. D. Han, Y. G. Ma, L. Zhu

备注：
7 pages, 6 figures
发表信息：
Sci. China-Phys. Mech. Astron. 63, 112062 (2020)
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摘要：

核合成是天体核演化中的一个复杂过程。本文利用热核反应数据库JINA REACLIB中的底物-产物方法构建了一个有向多层核反应网络。该网络包含四层，即$n$ -，$p$ -，$h$ -和$r$，分别对应于中子，质子，$^4$ He和其余部分所涉及的反应类型。n-、p-和h-三层的度值（即反应次数）彼此之间具有显著的相关性，它们的拓扑结构也表现出相似的规律性。然而，$r$层具有比其他层更复杂的拓扑结构，并且与其他三个层的相关性较小。用“mfinder”软件包分析了核反应网络的模体结构。因此，我们确定了最常见的反应模式之间发生的互连不同的核素。这项工作提供了一种新的方法来研究核反应网络盛行的天体物理背景下。

英文摘要：

Nucleosynthesis is a complex process in astro-nuclear evolution. In this work, we construct a directed multi-layer nuclear reaction network using the substrate-product method from a thermonuclear reaction database, JINA REACLIB. The network contains four layers, namely $n$-, $p$-, $h$- and $r$, corresponding to the reaction types involved in neutrons, protons, $^4$He and the remainder, respectively. The degree values (i.e. numbers of reactions) for three layers of n-, p- and h- have a significant correlation with one another, and their topological structures exhibit a similar regularity. However, the $r$-layer has a more complex topological structure than others and has less correlation with the other three layers. A software package named `mfinder' is employed to analyze the motif structure of the nuclear reaction network. We thus identify the most frequent reaction patterns of interconnections occurring among different nuclides. This work provides a novel approach to study the nuclear reaction network prevailing in the astrophysical context.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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