Single-Electron Capture into Ar + Excited States in Ar + Na Collision Below 12 Kev. 2: Relative Population Distributed in Ar + Excited States

摘要

Excitation cross-sections are obtained for each term of the ArII nl-states (nl=4p, 4p' and 4d) at 4 and 8 keV. The relative population distribution among the terms of a given nl-state can be interpreted in terms of statistics based on the building-up principle of molecule under radial coupling scheme. The relative population distribution among the multiplets in a given term is proportional to their statistical weight; spin-orbit recoupling at large internuclear separations is responsible for the population mechanism. The energy dependence of excitation cross-sections is discussed in connection with the Landau-Zener theory.