Abstract
Intermolecular interactions are known to affect the absorptivity of the atmosphere in various aspects. Pair effects give rise to distortions in the line profiles, make dipole forbidden bands to appear in the spectra, modify the band-shapes at elevated density etc. Three categories of molecular pairs can be distinguished in a gas which are true bound, metastable, and free pairs. Although somewhat overlapping, the spectroscopic manifestations of these entities are essentially different. Their partial contributions are subject to strong variations as a function of temperature and intermolecular potential energy. The present paper is targeted at reviewing bimolecular absorption phenomena taking infrared spectra of N2, O2, CO2, and H2O as an example.
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Vigasin, A.A. (2003). Bimolecular Absorption in Atmospheric Gases. In: Camy-Peyret, C., Vigasin, A.A. (eds) Weakly Interacting Molecular Pairs: Unconventional Absorbers of Radiation in the Atmosphere. NATO Science Series, vol 27. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0025-3_2
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DOI: https://doi.org/10.1007/978-94-010-0025-3_2
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