Difference in threshold between sono- and sonochemical luminescence
Difference in threshold between sono- and sonochemical luminescence
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DOI：
10.1143/jjap.39.2962
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发表时间：
2000-05-01
期刊：
影响因子：
--
通讯作者：
Mitome, H
中科院分区：
文献类型：
--
作者：
Hatanaka, S;Yasui, K;Mitome, H
研究了声致发光与声化学发光阈值的差异。在改变换能器的驱动频率和电压的同时，测量了矩形玻璃池中来自蒸馏水的SL和来自鲁米诺溶液的SCL的强度。同时测量了声压波形的第二谐波分量。结果表明，空化的声压阈值变高。SCL和SL按此顺序。随着液体中溶解气体的减少，SCL强度降低，但SL强度增加。对于一定量的溶解气体，随着液体温度的升高，SCL强度增加，但SL强度降低。在空气饱和液体的情况下，SCL和SL之间的阈值差随着液体温度的升高而变大。SCL与SL之比对温度的依赖关系与蒸汽压的依赖关系相似。
The difference in threshold between sonoluminescence (SL) and sonochemical luminescence (SCL) has been investigated. The intensity of both SL from distilled water and SCL from a luminol solution in a rectangular glass cell was measured while changing the driving frequency and voltage applied to the transducer. The second hamonic component of the sound-pressure waveform was also measured simultaneously. The results show that the thresholds in sound pressure become higher for cavitation. SCL and SL in this order. As the dissolved gas in a liquid decreases, the SCL intensity decreases but the SL intensity increases. For a constant quantity of dissolved gas, as the liquid temperature becomes higher, the SCL intensity increases but the SL intensity decreases. in the case of air-saturated liquids, the difference in threshold between SCL and SL becomes larger as the liquid temperature increases. The dependence of the ratio of SCL to SL on temperature is similar to that of vapor pressure.