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Blackbody spectra for sonoluminescing hydrogen bubbles
George Vazquez1, C Camara, S J Putterman
1Physics Department, University of California, Los Angeles, California 90095, USA.
Physical Review Letters
|May 15, 2002
Abstract:
The dynamical motion of sonoluminescing bubbles formed from a mixture of water and hydrogen gas indicates that these bubbles contain hydrogen. Their spectrum is well matched by an ideal 6000 K blackbody radiating from a surface with a radius less than 1/4 microm. According to this model, the state of matter inside the collapsed bubble is so stressed that the photon mean free path is much smaller than 1 microm. Implications for various theories of the light-emitting mechanism and the role of chemical reactions are discussed.