Dispersion and induction energy damping functions, and their scale with interspecies distance, for the interaction of H− with H, He and Li atoms Original Research Article

Reliable calculations of the induction and dispersion energy damping functions, associated with the R−n multipolar expanded induction and dispersion energies through n = 8 and n = 10 respectively, have been carried out for the H−B, BH, He, Li, interactions using well correlated monomer wave functions, for both the relevant groundstate and excited pseudostates, used in the pseudostate computational procedure. The results are used to discuss the relative scale of the induction and dispersion damping functions as a function of interspecies distance. The results of this paper augment those of previous work on the HH, HHe, HLi, HeHe, HeLi, LiLi, H+H, H+He, H+Li, He+H+, He+He, He+Li, Li+H, Li+He and Li+Li interactions and, together with the previous work, give a body of information from which, using interspecies scaling methods, induction and dispersion damping functions can be estimated for a variety of other interactions. Such information is relevant for the construction of potential energy models.