Time-dependent restricted-active-space configuration-interaction method for the photoionization of many-electron atoms

被引：79

作者：

Hochstuhl, David ^{[1
]}

Bonitz, Michael ^{[1
]}

机构：

[1] Inst Theoret Phys & Astrophys, D-24098 Kiel, Germany

来源：

PHYSICAL REVIEW A | 2012年 / 86卷 / 05期

关键词：

R-MATRIX; SHELL PHOTOIONIZATION; DOUBLE-IONIZATION; BERYLLIUM; EVOLUTION; SINGLE; STATES;

D O I：

10.1103/PhysRevA.86.053424

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We introduce the time-dependent restricted-active-space configuration-interaction method to solve the time-dependent Schrodinger equation for many-electron atoms, and particularly apply it to the treatment of photoionization processes in atoms. The method is presented in a very general formulation and incorporates a wide range of commonly used approximation schemes, such as the single-active electron approximation, time-dependent configuration interaction with single-excitations, or the time-dependent R-matrix method. We prove the applicability of the method by calculating the photoionization cross sections of helium and beryllium, as well as the x-ray-IR pump-probe ionization of beryllium.

引用

页数：12

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