Abstract
The eigenphase formulation of Blatt and Biedenharn (1952) is applied to fine-structure transitions in 2P atoms colliding with 1S perturbers. Consideration is given to the limit of weak spin-orbit interaction. If the eigenphases are equal to the phaseshifts for elastic scattering by the molecular potentials then the expression for the total cross section reduces to the expression derived in the elastic approximation. However, a numerical comparison for the Li(2p2P)+He(1S) system shows that the elastic molecular phaseshifts are not good approximations to the eigenphases. Hence the elastic approximation cannot be reliable.
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More From: Journal of Physics B: Atomic and Molecular Physics
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