论文标题
核景观中热核反应的网络结构
Network structure of thermonuclear reactions in nuclear landscape
论文作者
论文摘要
核合成是星空核进化中的一个复杂过程。在这项工作中，我们使用热核反应数据库Jina Reaclib的底物 - 产物方法构建了一个定向的多层核反应网络。该网络包含四层，即$ n $ - ，$ p $ - ，$ h $ - 和$ r $，对应于中子，质子，$^4 $ He和其余部分的反应类型。三层，p和h-的度值（即反应数）彼此之间具有显着的相关性，并且它们的拓扑结构具有相似的规律性。但是，$ r $ layer的拓扑结构比其他拓扑结构更复杂，并且与其他三层的相关性较小。使用名为“ mfinder”的软件包来分析核反应网络的基序结构。因此，我们确定了不同核素之间发生的互连的最常见反应模式。这项工作提供了一种新的方法来研究天体物理环境中盛行的核反应网络。
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.
