Synchronous Picosecond Sonoluminescence

这项建议要求研究声空化过程和伴随而来的电磁辐射发射。在这个过程中观察到的光被称为声致发光。在传播声波的过程中，含有微小空化的液体可能会猛烈到足以破坏甚至硬化的材料，气泡内的有效温度可以达到数千度。对这些过程中发生的物理和化学过程缺乏了解。然而，最近的研究创造了这样的条件，即每个周期观察到一个稳定的空化气泡产生声致发光。与这些气泡相关的“温度”似乎达到了接近10万K的水平，而电磁辐射莫名其妙地达到了1011部件内重复的同步水平。这些同步脉冲的持续时间小于50ps。已经提出了该工艺的几个技术应用。这项建议是为了研究这一过程的基础物理。

This proposal calls for the study of the process of acoustic cavitation and the accompanying emission of electromagnetic radiation. The light observed in this process is called sonoluminescence. In the process of propagating acoustic waves through a liquid containing microscopic cavitation can be violent enough to damage even hardened materials, and the effective temperature within the bubbles can reach thousands of degrees. There is a lack of knowledge of the physical and chemical processes occurring in these processes. However recent studies have produced conditions wherein a single, stable cavitation bubble is observed to generate sonoluminescence every cycle. "Temperatures" associated with these bubbles appear to reach levels near 100,000K and the electromagnetic emissions inexplicably achieve a level of synchronity that is repetitive to within a part 1011. The duration of these synchronous pulses is less that 50 ps. Several technological applications of this process have been suggested. This proposal is for the study of the basic physics of this process.