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Theoretical far-infrared spectrum of HCl in liquid Ar: A density dependence study by A.Calvo Hernández; J.A. White; S. Velasco is a Physics and Astronomy article available to read on EtoBox.

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A non-Markovian theory for the dipolar absorption coefficient of polar diatomic molecules diluted in a non-polar liquid medium is applied to obtain the far-infrared spectra of HCl in liquid Ar at densities between 480 and 100 amagat and T= 162.5 K. The time correlation functions involved in the theory are calculated by describing the time evolution of the anisotropic diatomicliquid medium interaction by a stochastic Omstein-Uhlenbeckprocess involving only two statistical parameters: the mean-square intensity of the diatomic-medium interaction, rZ', and its correlation time, f,. It is shown that (i) both 1' and tc depend linearly on the Ar density; (ii) an overlapping effect among the basic rotational transitions is noticeable even for the lowest Ar densities: and (iii) the influence of non-Markovian effects on the spectra is negligible over the entire density range.

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Author

A.Calvo Hernández; J.A. White; S. Velasco

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0009-2614)

Published

1989

Language

EN

Field

Physics and Astronomy (Physical Sciences)