中文摘要：

采用快速瞬态微型压力测量系统对脉冲激光加热下无水乙醇超急速爆发沸腾过程中液池内压力变化进行了测量，利用傅立叶变换、小波分析等理论工具对该过程的能量与频率特性进行了分析，并对汽泡群行为进行了理论推测。结果发现，爆发沸腾过程中压力信号频率处于MHz量级；在不同阶段气泡群行为具有不同特点。

英文摘要：

The pressure oscillation during the rapid transient explosive boiling of anhydrous ethanol was measured by a fast micro pressure measurement system. With Fourier and wavelet theory the energy and frequency characteristics were analyzed, and the behavior of the bubble cluster was predicted accordingly. The results showe that the pressure signal of explosive boiling is in MHz scale, and the behavior of the bubbles in the cluster differs at different stages.