Bound-bound transitions in hydrogenlike ions in Debye plasmas

Abstract

Plasma screening effects on the properties of bound-bound transitions of hydrogenlike ions imbedded in Debye plasmas are investigated. The electron eigenenergies and wave functions are determined by numerically solving the scaled Schr\odinger equation with a Debye potential by the fourth-order symplectic integration scheme. The scaled spectral properties of hydrogenlike ions in the plasma, including the transition frequencies, absorption oscillator strengths, radiative transition probabilities, as well as the line intensities of the Lyman and Balmer series, are presented for a wide range of plasma screening parameters. While for the $\ensuremath{\Delta}n\ensuremath{\ne}0$ transitions the oscillator strengths and spectral line intensities decrease with increasing the plasma screening, those for the $\ensuremath{\Delta}n=0$ transitions rapidly increase. The lines associated with the $\ensuremath{\Delta}n\ensuremath{\ne}0$ transitions are redshifted, whereas those for $\ensuremath{\Delta}n=0$ transitions are blueshifted. Comparison of present results with those of other authors, when available, is made. The results reported here should be useful in the interpretation of spectral properties of hydrogenlike ions in laboratory and astrophysical Debye plasmas.