单泡声致发光角关联度测量实验  

The Measurements of Angular Correlations in the Single Bubble Sonoluminescence

作　　者：杨健[1] 

机构地区：[1]防灾科技学院,河北三河065201

出　　处：《湘潭大学自然科学学报》2014年第4期20-23,共4页Natural Science Journal of Xiangtan University

基　　金：河北省高等学校科学研究计划项目(Z2012052)

摘　　要：建立了一套完整的声致发光的实验系统,利用该系统实现了稳定的单气泡声致发光达到1h以上,并在此基础上通过示波器观察和符合计数两种方法来证实声致发光的驱动超声频率与发光频率具有一致性的特点,在此基础上,以驱动超声信号作为数据获取系统的开门信号,利用11个光电倍增管对发光信号进行测量,得到在声致发光的过程中存在着非球形状态的结论.这为单泡发光能量聚集形式的研究提供了可能的依据,同时这些结果也有助于进一步了解单泡声致发光的发光机制.Thenecessary instrumets were set up for sonoluminescence characteristic and mechanism research,and the single bubble sonoluminescence（SBSL）can been attained and flashing duration can last over 1 h. Based on the experimental realization of SBSL,the authors used oscilloscope and coincidence counting to proved that the coherence between the driving ultrasonic frequency of SBSL and the emitting frequency. Under this feature, the authors measured the angular correlations in SBSL by the eleven multiplier phototubes, and with the signal of driving ultrasonic as an enabling signal of the data acquisition system . Then the con clusion that non-spherical symmetry in the process of SBSL they got . This will be provided a possible basis for reach higher levels of energy concentration in SBSL. At the same time, these results may be proved a useful to attempts to learn about the light emitting mechanism.

关 键 词：驱动超声 声致发光 发光频率 角关联 

分 类 号：O426.3[理学—声学]