Acoustic diagnostics of the explosive boiling up of a transparent liquid on an absorbing substrate induced by two nanosecond laser pulses

Photoacoustic pressure signals produced in an absorbing substrate under a layer of a transparent liquid irradiated by two successive nanosecond laser pulses are studied experimentally. The first pulse causes the heating and explosive boiling up of the liquid layer in contact with the irradiated surf...

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Bibliographic Details
Published inQuantum electronics (Woodbury, N.Y.) Vol. 37; no. 10; pp. 967 - 970
Main Authors Samokhin, A A, Klimentov, S M, Pivovarov, P A
Format Journal Article
LanguageEnglish
Published Woodbury, NY IOP Publishing 31.10.2007
American Institute of Physics
Subjects
ACOUSTIC MEASUREMENTS
BOILING
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
FLUIDS
GASES
HEATING
LASERS
LIQUIDS
MASS TRANSFER
PHASE TRANSFORMATIONS
PULSES
SIGNALS
SUBSTRATES
SURFACES
THIN FILMS
VAPORS
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Summary:Photoacoustic pressure signals produced in an absorbing substrate under a layer of a transparent liquid irradiated by two successive nanosecond laser pulses are studied experimentally. The first pulse causes the heating and explosive boiling up of the liquid layer in contact with the irradiated surface, while the second pulse reaches the target at the time when a vapour film has already formed on its surface. The second photoacoustic response contains additional information on heat-and-mass transfer between the liquid and substrate surfaces separated by the vapour film. (special issue devoted to the 25th anniversary of the a.m. prokhorov general physics institute)
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2007v037n10ABEH013625