Total Cross-Sections for Dipole-Dipole-Dipole Scattering by Using Effectively Spherically Symmetric Potentials

概要

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Generalised calculations of total scattering cross-sections for scattering between dipolar molecules have been made in terms of the resonance and Keesom approximations which reduce the problem effectively to that of an elastic one. For the resonance approximation, the cross-sections were computed by phase shift analysis assuming a fixed relative orientation between the two dipoles and subsequently averaging over all angles, and Schiff-Landau-Lifshitz approximation was used for the Keesom potential. A comparison with experimental cross-sections indicate that for collisions far off resonance, the observed values agree well with the Keesom cross-section, while the agreement with the resonance approximation is poor. However, for cases will higher probability of resonance collision the resonance approximation is likely to give better agreement with the observed values than for off-resonance cases.
社団法人日本物理学会の論文
1972-04-05