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Temperature Inhomogeneity during Multibubble Sonoluminescence

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  • This work is supported by the National Science Foundation.

Abstract

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Bright bubbles! Ultrabright sonoluminescence is observed from concentrated phosphoric acid (see picture). Two independent molecular emission species (excited OH. and PO.) can be observed from multibubble sonoluminescence; both of them can be used as spectroscopic thermometers to probe the extreme conditions generated during bubble collapse.

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