title: Effect of noble gas doping in single-bubble sonoluminescence.
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.
authors.forename: R
authors.initials: R
authors.lastname: Hiller
authors.forename: K
authors.initials: K
authors.lastname: Weninger
authors.forename: S J
authors.initials: SJ
authors.lastname: Putterman
authors.forename: B P
authors.initials: BP
authors.lastname: Barber