Low-frequency light-scattering spectroscopy of powders

Joel Hernandez, Gen Li, Herman Z. Cummins, Robert H. Callender, Robert M. Pick

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


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 languageEnglish (US)
Pages (from-to)1130-1134
Number of pages5
JournalJournal of the Optical Society of America B: Optical Physics
Issue number6
StatePublished - Jun 1996
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics


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