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Measured pulse width of sonoluminescence flashes in the form of resonance radiation

Giri, Asis and Arakeri, Vijay H (1998) Measured pulse width of sonoluminescence flashes in the form of resonance radiation. In: Physical Review E, 58 (3). R2713-R2716.

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Abstract

Recent studies have shown that the measured flash widths from single and multibubble sonoluminescence are in subnanosecond or even picosecond regime. Here, we provide conclusive evidence for the existence of nanosecond multibubble sonoluminescence. This has become possible by our ability to find a medium from which exclusive sodium D line resonance radiation as a form of sonoluminescence is possible. The measured flash width of this emission is found to be in the range of tens of nanoseconds and is sensitively dependent on experimental parameters. Our finding is important since all the earlier pulse width measurements have been limited to emission with the physical source or species responsible for observed optical radiation not being clearly identified. We propose that the presently observed resonance radiation is from ‘‘soft’’ bubble collapse as analyzed by V. Kamath et al.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to The American Physical Society
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 10 Aug 2006
Last Modified: 19 Sep 2010 04:30
URI: http://eprints.iisc.ernet.in/id/eprint/7989

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