J. Phys. II France
Volume 4, Numéro 4, April 1994
Page(s) 567 - 571
DOI: 10.1051/jp2:1994147
J. Phys. II France 4 (1994) 567-571

Lifetimes of collective resonance states (excimols) in polyatomic regular type molecules and clusters

H.-W. Fritsch1, H. Jungclas2, 1, V.V. Komarov2 and L. Schmidt2

1  MZ Radiologie, Philipps-Universität Marburg, D-35033 Marburg, Germany
2  Fachbereich Physikalische Chemie, Philipps-Universität Marburg, D-35033 Marburg, Germany

(Received 10 December 1993, accepted 4 February 1994)

A model to estimate lifetimes of excited collective resonance states (excimols) for large biomolecules or clusters, which have a regular or close to regular structure, is presented. These collective excited states arise due to resonance excitation of one or a few bonds in the constituents of the system. The model is based on the quantum multi-particle theory and the exciton or the excimol theory for the condensed matter and molecules. The spectral analysis for non-self-adjoined energy operators is used in the model. As an example, lifetimes are calculated for one-dimensional chain-like polyatomic molecules and for clusters formed by such molecules. The resulting lifetimes of the entire excitation are longer than the lifetimes of the initial trigger excitation.

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