在Skyrme核子-核子有效相互作用的不同组件对核密度分布的影响
1Department of Physics, Faculty of Science, Cairo University, Giza, 12613, Egypt. wseif@sci.cu.edu.eg.
Scientific reports
|October 16, 2023
概括
我们探索了Skyrme的功能参数如何影响核密度分布. 扩散度和中子皮厚度对力参数化最敏感,揭示了核结构研究的关键关系.
科学领域:
- 核物理 核物理 核物理
- 理论物理 理论物理
- 计算物理 计算物理
背景情况:
- 斯凯尔梅能量密度函数对于模拟核物质中有效的核子-核子相互作用至关重要.
- 了解核密度分布对于核结构和反应至关重要.
- 之前的研究已经探索了特定的Skyrme参数,但需要对多个参数进行系统的调查.
研究的目的:
- 系统地研究各种Skyrme能量密度函数项对球形原子核密度分布的影响.
- 确定哪些核物质 (NM) 属性和Skyrme力参数最显著地影响核密度概况.
- 为了建立特定力参数和可观测量,如扩散度和中子皮厚度之间的相关性.
主要方法:
- 检查了25个不同的Skyrme力参数化,涵盖了广泛的参数和核物质特性.
- 分析了每个参数化的球体原子核的密度分布.
- 量化了扩散度和中子皮厚度对Skyrme力项和NM特性变化的敏感性.
主要成果:
- 分散度和中子皮厚度被确定为对Skyrme力参数化最敏感的密度量.
- 减少的扩散度与增加的中心零范围,有效质量,密度依赖功率 (σ),对称性能量 (asym),它的斜率 (L) 和不压缩性 (Ko) 相相关.
- 中子皮厚度通常随着中心零距离,旋转轨道力,a,L和K的增加而增加,而随着有效质量而减少.
结论:
- 该研究强调了Skyrme功能参数在确定核密度分布方面的关键作用.
- 特定的参数,如中心零距离,旋转轨道力和核物质特性 (a, L, K) 显著影响中子皮厚度.
- 这些发现为完善Skyrme功能和预测核特性提供了宝贵的见解.
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