Radiative and nonradiative charge transfer in collisions of H(+) with Li below 1 keV

Abstract

Charge transfer resulting from collisions of H(+) with Li is studied from 1 keV/u down to 10<SUP>-5</SUP> eV/u. Excitation to Li* (2p) and charge transfer to H(n = 2) are found to be dominant above 10 eV. Below 10 eV, nonradiative charge transfer to H(1s) takes over, and at much lower energies radiative charge transfer/association becomes dominant. The rate coefficient for radiative charge transfer/association is on the order of10<SUP>--17</SUP> cc/s with a slowly decreasing trend as the temeprature increases, while that for non-radiative charge transfer varies drastically from 10<SUP>-20</SUP> cc/s at 100 K to 10<SUP>-12</SUP> cc/s at 10,000 K.