Low concentration oxygen impurities in a solid argon matrix, have been studied by Raman scattering at high pressure and room temperature. The vibron peak shows a splitting, due to vibrational coupling interaction between two nearest neighbour oxygen molecules, which increases with pressure. The pressure dependence of the vibrational coupling parameter, derived from these measurements, demonstrates a strong difference between oxygen and hydrogen, with respect to intermolecular interaction.
Vibrational Raman spectrum of O-2 in Ar matrix at room temperature and pressure to 60 GPa
Gorelli F;Ulivi L;Zoppi M
1997
Abstract
Low concentration oxygen impurities in a solid argon matrix, have been studied by Raman scattering at high pressure and room temperature. The vibron peak shows a splitting, due to vibrational coupling interaction between two nearest neighbour oxygen molecules, which increases with pressure. The pressure dependence of the vibrational coupling parameter, derived from these measurements, demonstrates a strong difference between oxygen and hydrogen, with respect to intermolecular interaction.File in questo prodotto:
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