Blackbody spectra for sonoluminescing hydrogen bubbles.
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.
Vazquez
George
G
Physics Department, University of California, Los Angeles, California 90095, USA.
Camara
C
C
Putterman
S J
SJ
Weninger
K
K