HOW IMPORTANT ARE SHOCK-WAVES TO SINGLE-BUBBLE SONOLUMINESCENCE

By solving numerically the full set of hydrodynamic equations governin g the pulsation of a bubble,we show that shock waves are often absent in a stable sonoluminescing bubble. Nevertheless, for a wide range of physical parameters, a continuous compressional wave emerges and heats up the bubble, and the resulting black-body radiations have pulse hei ghts and widths that agree with experimental data. Shock waves, being much less robust, are not essential for stable single-bubble sonolumin escence.