Document Type : Research

Author

Abstract

In this investigation by using a hydrochemical simulation the effect of the ambient pressure on the output parameters in Ar single bubble sonoluminescence in water at room temperature has been studied. By considering three dominant instabilities including diffusion, shape and Bjerknes in the phase diagram the initial conditions for stable bubble are considered. In addition the intensity of light emission at the moment of collapse is numerically calculated by electron-atom bremsstrahlung, electron-ion bremsstrahlung and radiative recombination. Calculation shows that in good agreement with previous observed evidence the expansion ratio, maximum temperature and emission light intensity are remarkably higher for lower ambient pressure and difference between the maximum and minimum temperature and intensity are about 4000K and 12 orders of magnitude respectively.

Keywords

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