Calculation of doubly excited 1Se states of Li+ using a B-spline based spectral approach of configuration type combined with the complex rotation method

被引：5

作者：

Albert, Marc-Andre ^{[1
]}

Laulan, Stephane ^{[1
]}

Barmaki, Samira ^{[1
]}

机构：

[1] Univ Moncton Campus Shippagan, Lab Phys Computat & Photon, 218 Blvd JD Gauthier, Shippegan, NB E8S 1P6, Canada

来源：

RADIATION PHYSICS AND CHEMISTRY | 2019年 / 158卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Time-independent Schrodinger equation; Complex rotation method; Two-electron system; Doubly excited states; Electron correlation; HELIUM; AUTOIONIZATION; ENERGIES; IONIZATION; WIDTHS; HE;

D O I：

10.1016/j.radphyschem.2019.01.021

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report in the present paper accurate computed resonant parameters for the doubly excited S-1(e) states of the He-like Li+ ion lying below the N = 2 and N = 3Li(2+)(Nl) hydrogenic thresholds. Our theoretical method is based on the diagonalization of the two-electron Hamiltonian using the complex rotation technique with B-spline functions. The present method enables to locate the resonances in the energy spectrum of the ion with a precise and simultaneous calculation of their energy positions and lifetimes. The obtained results are in very good agreement with other available experimental and theoretical data.

引用

页码：83 / 86

页数：4

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