It is known from experiment that the light emission from a sonoluminescing bubble can be increased by using more than one driving frequency. In this paper, a systematic method to determine the optimal conditions of pressure amplitude and relative phase for this effect is described. As a specific application, a two-frequency system¿26.5 kHz and 53 kHz¿is considered. It is found that the maximum temperatures achievable can be appreciably increased with respect to single-frequency drive, still maintaining spherical stability, provided the dissolved inert gas concentration is kept extremely low in order to maintain diffusive stability.
|Number of pages||9|
|Journal||Physical review E: Statistical physics, plasmas, fluids, and related interdisciplinary topics|
|Publication status||Published - 2003|