Abstract
We find that the number of vibrational states in the ground potential of a H2 + molecular ion embedded in the Debye plasma and the number of Regge oscillations in the resonant charge
transfer cross section of the H++H collision system in the plasma are quasi-conserved when
the Debye radius D is larger than 1.4a0. The elastic and resonant charge transfer processes in
the H++H collision have been studied in the 0.1 meV–100 eV collision energy range for a wide
range of Debye radii using a highly accurate calculation based on the modified ab initio
multireference configuration interaction code. Remarkable plasma screening effects have been
found in both the molecular structure and the collision dynamics of this system. Shape
resonances, Regge and glory oscillations have been found in the integral cross sections in the
considered energy range even for strong interaction screening, showing their ubiquitous nature.