ASA 128th Meeting - Austin, Texas - 1994 Nov 28 .. Dec 02

2pPAa2. Comparisons between multibubble and single-bubble sonoluminescence.

Thomas J. Matula

William B. McNamara, III

Pierre D. Mourad

Ron A. Roy

Kenneth S. Suslick

Appl. Phys. Lab., Univ. of Washington, Seattle, WA 98195

Univ. of Illinois, Urbana, IL 61801

Recent advances in the use of single bubble cavitation [D. F. Gaitan et al., J. Acoust. Soc. Am. 91, 3166 (1992)] have made it possible to examine both the temporal and spectral characteristics of sonoluminescence [B. P. Barber et al., J. Acoust. Soc. Am. 91, 3061 (1992)]. Direct comparison of the spectra of single-bubble sonoluminescence to multibubble sonoluminescence has proved difficult, however, due to differences in experimental conditions. Examination has begun of both single-bubble and multibubble sonoluminescence spectra of various aqueous solutions under closely similar conditions, where, in a systematic way, a variety of dissolved gases, volatile organic liquids, and involatile inorganic salts have been introduced. Qualitative comparisons of these spectra will be discussed. [Work supported by ONR and NSF.]