Anomalous Behavior in the Vibrational Raman Spectrum of Oxygen under Near-Critical Conditions
Abstract
The isothermal density dependence of both the shift and width of the Raman Q branch in oxygen gas have been found to exhibit anomalous behavior under near-critical conditions. The observed effects are interpretable in terms of molecular-cluster formation, and it is concluded that the Raman effect is a potentially valuable probe of density fluctuations in the critical region.
- Publication:
-
Physical Review Letters
- Pub Date:
- May 1978
- DOI:
- 10.1103/PhysRevLett.40.1170
- Bibcode:
- 1978PhRvL..40.1170C
- Keywords:
-
- Gas Density;
- Intermolecular Forces;
- Oxygen Spectra;
- Raman Spectra;
- Vibrational Spectra;
- Frequency Shift;
- High Resolution;
- Atomic and Molecular Physics