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Asymmetry sum rule for molecular predissociation

By Frederick T. Hawes, L. W. Torop, Brenton R. Lewis and Stephen Thomas Gibson

Abstract

© 2000 American Physical SocietyIn the case of weak diatomic molecular predissociation by noninteracting, optically inactive continuum states, it is demonstrated that the predissociation line shape is more accurately represented by a Beutler-Fano profile than by a Lorentzian. The weak asymmetry that is found to occur is due principally to interactions with neighboring vibrational resonances. For this type of predissociation in the case of multiple continua, a sum rule for the corresponding line-shape asymmetry is derived. This sum rule is verified numerically using single-channel and multichannel coupled Schrödinger-equation calculations for the Schumann-Runge band system of O2. Similar results are presented for the case of optically active continua.F. T. Hawes, L. W. Torop, B. R. Lewis and S. T. Gibso

Publisher: American Physical Society
Year: 2000
DOI identifier: 10.1103/PhysRevA.63.012513
OAI identifier: oai:digital.library.adelaide.edu.au:2440/12728
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