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Raman spectra of H 2 S along the liquid–vapour coexistence curve
Author(s) -
Salmoun Farida,
Dubessy Jean,
Garrabos Yves,
MarsaultHerail Françoise
Publication year - 1994
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250250407
Subject(s) - isotropy , raman spectroscopy , binodal , anisotropy , critical point (mathematics) , chemistry , saturation (graph theory) , dipole , spectral line , triple point , analytical chemistry (journal) , nuclear magnetic resonance , condensed matter physics , phase (matter) , molecular physics , phase diagram , thermodynamics , optics , physics , geometry , mathematics , organic chemistry , chromatography , combinatorics , astronomy
Abstract The ν 1 isotropic Raman spectrum of H 2 S was studied in the dilute gas phase and in the gas and liquid phases along the saturation line (282 ≤ T ≤ T c = 373.4 K). The temperature and density dependence of the hand shift was analysed assuming a strong resonant transfer due to dipolar interactions. A significant rotational contribution prevents a precise study of the vibrational effects on the asymmetric profile observed at ρ < ρ c . A striking critical inhomogeneous broadening is observed as the critical point is approached. Some new results on the v 2 isotropic and anisotropic bands of liquid H 2 S are also presented.