Is sonoluminescence due to collision-induced emission?

Lothar Frommhold, Anthony A. Atchley

Research output: Contribution to journalArticlepeer-review

56 Scopus citations


We estimate the collision-induced emission (CIE) intensity and profile in the visible and near UV region of the spectrum of N2-X pairs where X represents another N2 molecule or an argon atom, etc. of shock waves believed to exist in sonoluminescence experiments. Calculated profiles consist of superimposed high overtone bands and resemble the measured profiles. Intensities calculated on the basis of a few, simple assumptions concerning the induced dipole surface compare favorably with measurements. The agreement obtained suggests that CIE is an attractive alternative to bremsstrahlung to explain sonoluminescence. The CIE source is optically thin, and the spectral emission profile is not related to Planck's law.

Original languageEnglish (US)
Pages (from-to)2883-2886
Number of pages4
JournalPhysical review letters
Issue number21
StatePublished - 1994

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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