Many-Channel Microscopic Model for Resonance Structure in $^{9}$Be and $^{9}$B: Astrophysical Insights

IF 1.7 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Few-Body Systems Pub Date : 2024-02-23 DOI:10.1007/s00601-024-01881-w

Yuliia Lashko, Victor Vasilevsky, Victor Zhaba

引用次数: 0

Abstract

This study presents a novel many-channel microscopic model to describe high-energy resonance states in $^9$Be and $^9$B, particularly addressing the cosmological lithium problem. The model integrates multiple three-cluster configurations and binary channels, unveiling 18 resonance states in each nucleus. Significant emphasis is placed on understanding resonance states’ impact on astrophysical S-factors, particularly in reactions involving $^7$Li, $^7$Be, $^6$Li, $^3$H, $^3$He and a deuteron. The results highlight the influence of resonance states and channel coupling on S-factors, offering new insights into nuclear reactions crucial for cosmological inquiries. This comprehensive analysis bridges theoretical predictions with experimental data, enhancing our understanding of nuclear processes in astrophysical contexts.

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$$^{9}$ Be 和 $$^{9}$ B 中共振结构的多通道微观模型：天体物理学启示

本研究提出了一个新颖的多通道微观模型来描述(^9\)Be和(^9\)B中的高能共振态，特别是解决宇宙学中的锂问题。该模型整合了多个三簇构型和双通道，揭示了每个原子核中的 18 种共振态。重点是理解共振态对天体物理 S 因子的影响，特别是在$^7$Li、$^7$Be、$^6$Li、$^3$H、$^3$He 和一个氘核的反应中。结果强调了共振态和通道耦合对 S 因子的影响，为宇宙学研究中至关重要的核反应提供了新的见解。这项全面的分析将理论预测与实验数据联系起来，增强了我们对天体物理背景下核过程的理解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Few-Body Systems 物理-物理：综合

CiteScore

2.90

自引率

18.80%

发文量

审稿时长

6-12 weeks

期刊介绍： The journal Few-Body Systems presents original research work – experimental, theoretical and computational – investigating the behavior of any classical or quantum system consisting of a small number of well-defined constituent structures. The focus is on the research methods, properties, and results characteristic of few-body systems. Examples of few-body systems range from few-quark states, light nuclear and hadronic systems; few-electron atomic systems and small molecules; and specific systems in condensed matter and surface physics (such as quantum dots and highly correlated trapped systems), up to and including large-scale celestial structures. Systems for which an equivalent one-body description is available or can be designed, and large systems for which specific many-body methods are needed are outside the scope of the journal. The journal is devoted to the publication of all aspects of few-body systems research and applications. While concentrating on few-body systems well-suited to rigorous solutions, the journal also encourages interdisciplinary contributions that foster common approaches and insights, introduce and benchmark the use of novel tools (e.g. machine learning) and develop relevant applications (e.g. few-body aspects in quantum technologies).

Many-Channel Microscopic Model for Resonance Structure in \(^{9}\)Be and \(^{9}\)B: Astrophysical Insights

Abstract