Abstract
The precise estimation of atomic polarizabilities impinges upon a number of areas and processes in physical science. We calculate precisely the dynamic multipole polarizabilities of the helium and screened-helium atoms using highly correlated exponential wavefunctions based on the pseudo-state summation method. For screened environments, we consider the Debye–Hückel potential (DHP) as the interaction potentials between the charged particles. The dynamic multipole (quadrupole, octupole, and hexadecapole) polarizabilities for the ground state of the helium atom and the multipole (quadrupole and octupole) polarizabilities of the screened-helium atom for different screening parameters are reported along with magic-zero wavelengths. The reported results for hexadecapole polarizability of the helium atom and dynamic multipole polarizability of the screened-helium atom are new and would be useful for future investigation on this topic.
Highlights
Despite the fact that the estimation of atomic polarizability is a challenging task from the computational side, the atomic and ionic polarizabilities can be determined precisely with a reasonable timeframe by exploiting high precision computational techniques [1]
The main interest of this work is the precise determination of the dynamic multipole polarizabilities of the helium and screened-helium atoms, and so we have listed mainly some references related to the polarizability calculations of the helium atom
We have investigated the dynamic multipole polarizabilities
Summary
Despite the fact that the estimation of atomic polarizability is a challenging task from the computational side, the atomic and ionic polarizabilities can be determined precisely with a reasonable timeframe by exploiting high precision computational techniques [1]. The main interest of this work is the precise determination of the dynamic multipole (quadrupole, octupole and hexadecapole) polarizabilities of the helium and screened-helium atoms, and so we have listed mainly some references related to the polarizability calculations of the helium atom. The static dipole [3,4,5,6,7,8], quadrupole [3,4,5,7,8], octupole [3,4,5,7,8] hexadecapole [8] polarizabilities of the helium atom has been studied independently by different research groups using variational and ab initio methods. The results reported in this paper for the screened atomic system are new
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