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Proceedings Paper

Site symmetry and effective Hamiltonians for H2X molecules in the local mode limit
Author(s): Vladimir M. Mikhailov; O. V. Naumenko; M. A. Smirnov
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Paper Abstract

The effective rotational Hamiltonian for the stretching modes of H2X molecules have been analyzed on the base of the two conceptions: site-symmetry and linked groupings of vibrational rotational interactions. The site-symmetry of the effective Hamiltonian for the region of (v1, v3) dyad of H2X molecules at the condition mH << mx is reduced to Cs symmetry, as compared with C2V symmetry of the initial Hamiltonian. For the first time for H2X molecule with strong Coriolis-type accidental resonance it had been shown that the parameters of effective Hamiltonian depend on groupings of vibrational- rotational interactions. This dependence from weak via middle to strong resonances has the trend to decrease. For H2S molecule at the local mode limit, the effective Hamiltonian for Coriolis-type resonance don't depend on the groupings of initial Hamiltonian expansions. Two ways of experimental energy levels assignment for some vibrational polyads of H2S molecule, based on the symmetry reduction conception have been presented.

Paper Details

Date Published: 13 January 1999
PDF: 6 pages
Proc. SPIE 3583, Fifth International Symposium on Atmospheric and Ocean Optics, (13 January 1999); doi: 10.1117/12.336992
Show Author Affiliations
Vladimir M. Mikhailov, Institute of Atmospheric Optics (Russia)
O. V. Naumenko, Institute of Atmospheric Optics (Russia)
M. A. Smirnov, Institute of Atmospheric Optics (Russia)

Published in SPIE Proceedings Vol. 3583:
Fifth International Symposium on Atmospheric and Ocean Optics
Vladimir E. Zuev; Gennadii G. Matvienko, Editor(s)

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