Pressure Induced Resonance Raman Effects in Shocked Carbon Disulfide
Technical rept. 1 Jun 1986-1 Mar 1989
WASHINGTON STATE UNIV PULLMAN SHOCK DYNAMICS LAB
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Understanding shock induced chemical processes in condensed materials requires knowledge about the molecular structure, chemical species and kinetics in these experiments. Hence, spectroscopic techniques have been used increasingly in recent years to complement the bulk or continuum measurements that are normally obtained in shock wave experiments. Time-resolved Raman spectroscopy applied to study shock-induced processes has been developed and as an example, studies of the solid carbon disulfide at 8 GPa and 160 K are presented. Pressure shifts of symmetric stretching mode, v1 and first overtone of the bending mode, 2v2 have been measured and the separation between two bands is decreased with pressure. Enhancement of the Raman cross section of carbon disulfide is observed at the higher pressures than 7 GPa and this will be explained in terms of pressure induced resonance Raman effect.
- Physical Chemistry