Stable Single-Bubble Sonoluminescence without the presence of noble gasesM. T. Levinsen and J. S. Dam
Complexity Lab, Niels Bohr Institute - Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark
received 13 April 2007; accepted in final form 29 August 2007; published October 2007
published online 19 September 2007
We report that in spite of the commonly accepted view that stable Single-Bubble Sonoluminescence (SBSL) can only be achieved in water in the presence of a noble gas or hydrogen, long term stable SBSL can in fact be sustained with only diatomic gases like e.g. nitrogen being present. Compared to that of a stable argon bubble, the emission is much weaker and the spectrum looks much colder. Simulations support that the above quoted view, based on the dissociation hypothesis, is an erroneous inference from this theory.
78.60.Mq - Sonoluminescence, triboluminescence.
© Europhysics Letters Association 2007