【摘要】 本实验研究首次证实超声在水介质中传播时有高水平的H₂发射,其峰值高出背景水平2至3个数量级,并取得了H₂发射图象。据实验结果,论述了超声振动可断裂H₂的化学键;以此为引发条件,活化的H·和OH·与失稳的H₂O分子产生自发的链反应,使H₂发射加速;而所产生的H₂O₂扩展链反应,进一步使H₂发射加速;超声振动停止后,失去了引发条件,链反应中断,H₂发射也随之停止。该反应机理能很好地解释为什么H₂发射图象具有反应迅速、变幅大、恢复快的特征。以超声机理观点,超声在水介质中传播时的H₂发射可能作为灵敏的震兆指标。更多还原

【Abstract】 For the first time, this experimental study verifies that as ultrasound travels in water medium, there is hydrogen emission with high level, the peak value of which is 2 or 3 order of magnitude higher than the background level of hydrogen, and the image of hydrogen emission has been obtained.The experimental results indicate that the ultrasonic vibration can break the chemistry bons of H2O; taking this as an initiating condition, spontaneous chain reaction is produced between activated H·, OH·2, and unstable H20 thus speeding up hydrogen emission; the produced H2O2 expand chain reaction further speeding up hydrogen emission; and when the ultrasonic vibration stops, the initiating condition is lost, then chain reaction is suspended and hydrogen emission stops.This reaction mechanism may well explain why the image of hydrogen emission possesses the characteristics of rapid response, change with great amplitude and quick return.By the viewpoint of ultrasonic mechanism, hydrogen emission as ultrasound travels in water medium may be regarded as sensitive seismic precursory index.更多还原