Effect of noble gas doping in single-bubble sonoluminescence.
Science
; 266(5183): 248-50, 1994 Oct 14.
Article
em En
| MEDLINE
| ID: mdl-17771443
ABSTRACT
The trillionfold concentration of sound energy by a trapped gas bubble, so as to emit picosecond flashes of ultraviolet light, is found to be extremely sensitive to doping with a noble gas. Increasing the noble gas content of a nitrogen bubble to about 1% dramatically stabilizes the bubble motion and increases the light emission by over an order of magnitude to a value that exceeds the sonoluminescence of either gas alone. The spectrum also strongly depends on the nature of the gas inside the bubble Xenon yields a spectral peak at about 300 nanometers, whereas the helium spectrum is so strongly ultraviolet that its peak is obscured by the cutoff of water.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
1994
Tipo de documento:
Article