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.