Abstract:
Explosive breakup of an overheated metastable liquid is considered in the case when intensive evaporation may occur from a free surface. It is shown that, in particular, a pulsating evaporation of an absorbing substance under the action of laser radiation may occur without a significant screening of the irradiated surface by the explosive evaporation products. If the depth of absorption of laser radiation in this substance exceeds the characteristic length of the steady-state temperature distribution influenced by the free surface, the process of explosive breakup of the metastable state at the maximum overheating temperature may sometimes have a fine structure manifested by high-frequency (≤10–5 sec) pulsations. These pulsations should also be observed in the case of explosive breakup of the metastable state which occurs after a sudden removal of the pressure from the surface of a liquid previously heated under equilibrium conditions to a temperature close to the critical value.
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