摘要
采用频率为 1.1MHz的脉冲声波 ,在声强≤ 0 .5W/ cm2 的条件下引发溶液中的声致发光 ,发现在脉冲宽度为 2 0 0 μs- 4 0 0 μs的区间内声致发光出现峰值。由于声致发光由超声波空化效应引发 ,因此 ,空化效应出现峰值。该实验结果不同于 Hill和 Flynn等人的实验结论。
Pulsed ultrasound of frequency 1.1MHz,sound intensity ≤0.5 W/cm 2 was used to induced sonoluminescence.It was found that the sonoluminescence peak appeared in 200μs—400μs. Because sonoluminescence was induced by cavitation,thus cavitation appeared a peak.The experimental results were different from Hill and Flynns results.
出处
《声学技术》
CSCD
2000年第3期144-145,共2页
Technical Acoustics
基金
南京大学近代声学国家重点实验室资助
关键词
脉冲声场
声致发光
空化峰
pulsed ultrasound field
sonoluminescence
cavitation peak
