Document Type

Article

Publication/Presentation Date

3-2007

Abstract/Description

The fast boiling dynamics of superheated surface layers of bulk water cavitating under near-spinodal conditions during nanosecond C O2 laser heating pulses was studied using contact broad-band photoacoustic spectroscopy. Characteristic pressure-tension cycles recorded by an acoustic transducer at different incident laser fluences represent (a) weak random oscillations of transient nanometer-sized near-critical bubbles-precursors and (b) well-defined stimulated oscillations of micron-sized supercritical bubbles and their submicrosecond coalescence products. These findings provide an important insight into basic thermodynamic parameters, spatial and temporal scales of bubble nucleation during explosive liquid/vapor transformations in absorbing liquids ablated by short laser pulses in the thermal confinement regime.

© 2007 The American Physical Society.

Publication Title

Physical Review E

DOI

https://doi.org/10.1103/PhysRevE.75.036313

Additional Information

Dr. Susan Allen was not affiliated with Embry-Riddle Aeronautical University at the time this document was published.

Required Publisher’s Statement

Pre-print

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