DISTORTED WAVE BORN SERIES FOR ROTATIONAL INELASTIC SCATTERING.
Abstract:
The distorted wave Born series is applied to the problem of rotational inelastic scattering of an atom by a diatomic molecule. The formulation is made in the total angular momentum representation, and for the special but important case of an exponential interaction a simple second-order expression for the degeneracy averaged cross section is derived. Numerical results for two intermolecular potentials compare favorably with exact and DW results do not vanish near threshold, 2 show the applicability of the method to molecules heavier than H2, 3 provide a method of assessing the relative order of contributions from various internal states, 4 provide a method of estimating higher order terms in the DWB series. The application of the second-order DWB series to problems with different forms of potentials of interaction requires only a single numerical integration. Author