Collisionally induced transition dipole moments of alkali-rare gas atom systems

The electronic transition dipole moments in alkali-rare gas atom systems have been calculated as a function of the internuclear distanceR. The pseudopotential method of Baylis with some refinements has been used in the calculation. In particular, the Bates-Damgaard functions used in the previous pseudopotential calculations of Baylis and Pascale et al. have been replaced by the more realistic atomic orbitals suggested by Simons. The results are presented graphically for the molecular transitions associated asymptotically (R→∞) with forbiddenS-S andS-D dipole transitions in the alkali atoms. The transition moments turn out to be relatively large at internuclear distances smaller thanR=12a₀.