Open AccessMolecular and atomic emission during single- bubble cavitation in concentrated sulfuric acid
Author(s) -
David J. Flannigan,
Kenneth S. Suslick
Publication year - 2005
Publication title -
acoustics research letters online
Language(s) - English
Resource type - Journals
ISSN - 1529-7853
DOI - 10.1121/1.1897810
Subject(s) - sonoluminescence , bubble , sulfuric acid , cavitation , light emission , emission spectrum , chemical physics , materials science , spectral line , oscillation (cell signaling) , chemistry , analytical chemistry (journal) , atomic physics , inorganic chemistry , physics , mechanics , optoelectronics , environmental chemistry , astronomy , biochemistry
Concentrated acid solutions have been reported to produce bright light emission during cavitation. Single-bubble sonoluminescence (SBSL) from sulfuric acid (H2SO4) is much brighter than SBSL from water by over three orders of magnitude when both are regassed with Ar. In contrast to water, SBSL spectra of concentrated H2SO4 contain extensive atomic, molecular, and ionic emission revealing details about intracavity physical conditions and chemical processes. Observation of specific emitters coupled with detailed studies of the temporal emission of the emitters relative to one another and to the overall bubble oscillation will lead to a much more detailed understanding of SBSL. (C) 2005 Acoustical Society of America.
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