Quantal and semiclassical calculations of charge transfer cross sections in Be4++H collisions for impact energies of 2.5 eV amu-1 < E < 25 keV amu-1

Total and n-partial cross sections for charge transfer in Be4++H(1s,2s) collisions are calculated for collision energies between 2.5 eV amu-1 and 25 keV amu-1. A molecular expansion is employed, and semiclassical and quantal calculations are carried out including a common translation factor and a common reaction coordinate, respectively. The comparison between quantal and semiclassical cross sections and transition probabilities is discussed. (author)