动态极化性和分散系数的变化扰动理论
Wen Hao Xia1, Zhi Ling Zhou1, Li Guang Jiao1,2,3
1College of Physics, Jilin University, Changchun 130012, People's Republic of China.
Physical review. E
|October 18, 2023
概括
一种新的变异扰动理论 (VPT) 方法有效地计算原子极化度和分散系数,仅使用基本状态信息. 这种方法准确地模拟了嵌入原子的等离子体选效应.
科学领域:
- 原子物理 原子物理
- 量子化学是一种量子化学.
- 计算物理学的计算物理.
背景情况:
- 计算原子特性,如极化性和分散系数,对于理解原子相互作用至关重要.
- 传统的方法,如总和对状态,可以是计算密集的.
- 开发高效准确的计算方法是原子物理学的持续挑战.
研究的目的:
- 基于变量扰动理论 (VPT) 提出一种有效的计算方法,用于计算原子动态极化和原子间分散系数.
- 通过将其结果与已确定的方法进行比较来验证拟议的VPT方法的准确性.
- 为了研究等离子体选对嵌入原子的这些原子性质的影响.
主要方法:
- 该研究使用变异扰动理论 (VPT) 来计算原子性质.
- 该方法只需要系统的基态波函数和辐射平均值.
- 使用一电子和两电子原子验证了VPT方法,并与总和法进行了比较.
主要成果:
- 对于简单的原子,VPT方法与复杂的总和超值计算表达了良好的一致性.
- 该方法已成功应用于研究He异电子序列中的Z缩放规律.
- 在各种选参数中,VPT方法准确地预测了等离子体内嵌入原子的静态和动态极化度和分散系数.
结论:
- 开发的VPT方法为计算原子极化率和分散系数提供了一种高效准确的方法.
- 该方法具有优势,因为其计算要求最小 (仅提供地面状态信息).
- VPT方法有效地捕捉了等离子体查对嵌入原子特性的影响.
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