Light-scattering spectra of powders of transparent materials were found to exhibit a characteristic band at frequencies below ∼1 cm-1. This band was observed in all powdered materials studied, including enzymes, organic and inorganic crystals, and glass. We interpret the band as a superposition of Brillouin lines produced in combined elastic and inelastic scattering events. A theoretical expression is deduced for the spectrum that is in good agreement with the experiments.
|Original language||English (US)|
|Number of pages||5|
|Journal||Journal of the Optical Society of America B: Optical Physics|
|Publication status||Published - Jun 1996|
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics