Session H37: General Fluid Dynamics and Phenomena
8:00 AM–11:00 AM, Tuesday, March 22, 2005
LACC Room: 512
Sponsoring Unit:
DFD
Chair: Gary Williams, UCLA
Abstract ID: BAPS.2005.MAR.H37.1
Abstract: H37.00001 : Spectrum and Dynamics of Luminescence from Laser-created Bubbles in Pressurized Water
8:00 AM–8:12 AM
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Authors:
Frank Lee
David Hecht
Emil A. Brujan
Gary A. Williams
(UCLA)
The properties of the luminescence pulse from laser-created bubbles in pressurized water are studied for pressures between 0.25 and 15 bars. The duration of the light pulse is linear in the maximum bubble size, but for a given bubble size it increases with pressure. The spectrum of the light is blackbody in form, with a temperature that increases somewhat with pressure, from 8100 K at 1 bar to 9400 K at 10 bars. At higher pressures the blackbody temperature drops, but this is primarily due to the rapid onset above 10 bars of a fission instability, where the bubbles split into two just before the collapse point.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2005.MAR.H37.1