Abstract
Primitive semiclassical and uniform asymptotic approximations to the Franck-Condon factors (FCF) for bound-bound transitions, which are valid even if four stationary-phase points coincide, are derived in terms of canonical integrals of catastrophe theory. Applications to the harmonic-oscillator approach, which allows one to evaluate the exact FCF, are used to illustrate the technique and to test the accuracy of the approximations.
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More From: Journal of Physics B: Atomic and Molecular Physics
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