摘要
采用频率为1．1MHz，声辐射面积为3cm^2的换能器，在输入电功率0－120W范围内研究了被空气自然饱和的纯水中声致发光强度和输入电功率在大范围内变化时的关系．结果表明，声致发光在输入电功率为70-90W之间，不再随输入电功率的增加而增加，呈现出饱和现象．在饱和值的出现前，发光强度随输入电功率的增加呈不规则的阶状增加；在饱和值结束后，随输入电功率的增加，发光强度迅速减小．本文对实验结果进行了些定性的讨论．
Ultrasonic transducer with frequency 1.1 MHz was used to induce sonoluminescence (SL) from air saturated water at the input electric power in the range of 0-120W. We found the SL intensity change with input electric power, a peak appear at the input power between 70-90 W. In forward position of the peak, SL intensity change as several steps with input electric power increased, in the end of the peak, SL intensity dec redse sharply with increasing input electric power.
出处
《应用声学》
CSCD
1995年第1期39-41,18,共4页
Journal of Applied Acoustics
基金
南京大学近代声学国家重点实验室资助
关键词
超声波
声致发光强度
输入电功率
Ultrasound, Sonoluminescence intensity, input electric power
