## Adiabatic limit and nonadiabatic effects in the second order transition potential. Semi-empirical analysis

The second order transition potential introduced in a previous paper (Csanak, Taylor & Tripathy, J. Phys. B. Atom. Molec. Phys.; 6: 2040-54 (1973)) is generalized and analyzed from the energy-dependency point of view. The adiabatic limit and the first nonadiabatic correction is given. The same potential is analyzed also in terms of multipole moments, and it is shown how wave function methods can be used to calculate it. In the adiabatic, dipole limit the long-range part of the transition polarization potential agrees with the one used in the polarized Born approxirnation (Truhlar Thesis (1970)), Rice et al. (Phys. Rev.; A5:more »