Abstract
We have measured the linewidths of depolarized rotational Raman spectra for mixtures of oxygen and noble gases such as He, Ne, Ar, Kr. The measurements are made from 181 K to 373 K and for rotational quantum numbers of molecular oxygen varying from N=1 to N=25. Comparison is made with calculations obtained by a semi-classical theory of line broadening using intermolecular potentials given either by combination rules or by analysis of various thermodynamic properties. We observe a generally good agreement between the experimental data and the theoretical results Mesure des largeurs des raies du spectre Raman depolarise des melanges d'oxygene et gaz rares entre 181 et 373 K pour des nombres quantiques de rotation de la molecule d'oxygene de N=1 a N=25. Interpretation de l'elargissement par collisions
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