Effective oscillator strength distributions of spherically symmetric atoms for calculating polarizabilities and long-range atom-atom interactions

TL;DR

This paper systematically generates effective oscillator strength distributions for various atoms and ions, enabling accurate calculation of polarizabilities and long-range atom-atom interaction coefficients essential for understanding atomic interactions.

Contribution

It introduces a comprehensive method to generate and tabulate oscillator strength distributions for multiple atom types, facilitating precise calculations of polarizabilities and long-range interactions.

Findings

Generated oscillator strength distributions for key atomic species.

Calculated static and dynamic polarizabilities at imaginary frequencies.

Provided tables for C6, C8, and C10 long-range interaction coefficients.

Abstract

Effective oscillator strength distributions are systematically generated and tabulated for the alkali atoms, the alkaline-earth atoms, the alkaline-earth ions, the rare gases and some miscellaneous atoms. These effective distributions are used to compute the dipole, quadrupole and octupole static polarizabilities, and are then applied to the calculation of the dynamic polarizabilities at imaginary frequencies. These polarizabilities can be used to determine the long-range $C_6$, $C_8$ and $C_{10}$ atom-atom interactions for the dimers formed from any of these atoms and ions, and we present tables covering all of these combinations.