Table of Contents
International Journal of Spectroscopy
Volume 2013, Article ID 485432, 8 pages
Research Article

A Simulation Study of the Far-Infrared Absorption Spectra of HCl Diluted in Liquid Ar

Department of Fundamental and Experimental Physics, Electronics and Systems, University of La Laguna, Avenida Astrofísico Francisco Sánchez 38200, La Laguna, Spain

Received 4 June 2013; Revised 31 July 2013; Accepted 15 August 2013

Academic Editor: Stefan Schmatz

Copyright © 2013 A. Padilla and J. Pérez. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The far-infrared absorption coefficient of HCl diluted in liquid Ar has been calculated by using a mixed classical-quantum stochastic simulation approach. The simulated spectra have been compared with the available experimental data at different thermodynamic conditions without using ad hoc fitting parameters. Despite the fact that some discrepancies can be observed in the high frequency side of the far-infrared bands, a reasonable agreement has been found between the theoretical and the experimental spectral profiles. Both, classical and quantum simulated line shapes were comparatively analyzed, determining the time scales involved in the rotational spectra.