Polarizabilities of Negatively Charged Helium-Like Ions with Exponential-Cosine-Screened Coulomb Potentials

Abstract

We investigate the multipole polarizabilities of negatively charged helium-like ions interacting with exponential-cosine-screened Coulomb potentials using correlated exponential wave functions. The dynamic dipole and quadrupole polarizabilities of negatively charged helium-like ions \(^{\mathrm {\infty }}\)H\(^{\mathrm {-}}\), \(^{\textrm{1}}\)H\(^{\mathrm {-}}\), D\(^{\mathrm {-}}\), T\(^{\mathrm {-}}\), Mu\(^{\mathrm {-}}\), Pi\(^{\mathrm {- }}\)are presented as functions of screening parameter. The static dipole and quadrupole polarizabilities, and the ground state energies are presented in terms of nuclear mass and screening parameter.