Sonoluminescence: nature’s smallest blackbody
2001; Optica Publishing Group; Volume: 26; Issue: 9 Linguagem: Inglês
10.1364/ol.26.000575
ISSN1539-4794
AutoresGeorge Vazquez, Carlos G. Camara, Seth Putterman, Keith Weninger,
Tópico(s)Nuclear Physics and Applications
ResumoThe transduction of sound into light through the implosion of a bubble of gas leads to a flash of light whose duration is delineated in picoseconds. Combined measurements of spectral irradiance, Mie scattering, and flash width (as determined by time-correlated single-photon counting) suggest that sonoluminescence from hydrogen and noble-gas bubbles is radiation from a blackbody with temperatures ranging from 6000 KH2 to 20,000 K (He) and a surface of emission whose radius ranges from 0.1 μmHe to 0.4 μmXe. The state of matter that would admit photon–matter equilibrium under such conditions is a mystery.
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