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Spectrum of luminescence from laser-created bubbles in water.

Authors
Type
Published Article
Journal
Physical review letters
Publication Date
Volume
86
Issue
21
Pages
4934–4937
Identifiers
PMID: 11384385
Source
Medline

Abstract

The spectrum of the luminescence emitted at the collapse of single laser-induced bubbles in water is measured for different maximum bubble radii. Bubbles as large as 2 mm show a molecular OH(*) band at 310 nm in the spectrum, which otherwise can be fitted approximately with a blackbody curve at a temperature of 7800 K. This finding provides a connection between the light emission of single bubbles and multibubble sonoluminescence, since in the latter case the same molecular band is observed. Surface instabilities are observed in the larger bubbles, and may be connected with the OH(*) emission.

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