摘要
被水中驻波声压捕获在声压波腹的单个气泡,能周期地发出宽度50ps～140ps的光脉冲,这种现象称为单泡声致发光。稳定的单泡声致发光的参数主要由振荡形状稳定性、质量扩散平衡、组分的化学平衡和高的能量集聚等条件确定。文章将根据上述四条件对气泡的动力学稳定性作简单讨论。
A single bubble trapped at the antinode of an acoustic standing wave field in water can emit 50ps~ 140ps light pulses. This is called 'single bubble sonoluminescence'(SBSL). The parameter space of a stable SBSL is mainly determined by stable shape oscillation, diffusive equilibrium of mass, chemical equilibrium of components, and high energy focusing in its interior. Based on these four conditions, the dynamic stability of the bubble is briefly discussed in this paper.
出处
《声学技术》
CSCD
2003年第2期130-135,共6页
Technical Acoustics
基金
国家自然科学基金(19934001)
教育部博士点(2000年024706)基金
