应用于双电子共振态的相对论双稳化方法
Stabilization method with Relativistic Configuration-interaction applied to two-electron resonances
摘要：
我们应用相对论组态相互作用（CI）框架的稳定化方法作为获得类氦离子的自电离共振结构的一种方法。在这种方法中，离子被限制在一个不可穿透的球形空腔内，其大小决定了电子波函数和电子-电子相互作用的径向空间。通过改变腔的尺寸，可以获得自电离共振的位置和宽度。通过对He原子共振谱的计算，验证了该方法的适用性，并与文献中的基准数据进行了比较。本文方法还用于确定类氦铀离子的共振结构，其中相对论框架是必需的。在强约束区，该方法可用于模拟极端压力下原子或离子的性质。简要讨论了本方法用于确定嵌入在稠密等离子体环境中的离子的结构的示例性应用。
英文摘要：
We applied a relativistic configuration-interaction (CI) framework to the stabilization method as an approach for obtaining the autoionization resonance structure of heliumlike ions. In this method, the ion is confined within an impenetrable spherical cavity, the size of which determines the radial space available for electron wavefunctions and electron-electron interactions. By varying the size of the cavity, one can obtain the autoionization resonance position and width. The applicability of this method is tested on the resonances of He atom while comparing with benchmark data available in the literature. The present method is further applied to the determination of the resonance structure of heliumlike uranium ion, where a relativistic framework is mandatory. In the strong-confinement region, the present method can be useful to simulate the properties of an atom or ion under extreme pressure. An exemplary application of the present method to determine the structure of ions embedded in a dense plasma environment is briefly discussed.
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