The characteristics of sonoluminescence  

作　　者：An Yu Zhang Wen-Juan 安宇;张文娟(Department of Physics,Tsinghua University,Beijing 100084,China)

机构地区：[1]Department of Physics,Tsinghua University,Beijing 100084,China

出　　处：《Chinese Physics B》2012年第1期499-506,共8页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.10974116)

摘　　要：Cavitation luminescence is light emission from gases that are compressed to high temperature and high pressure inside a bubble or group of bubbles. The numerical simulation in this study indicates that if the temperature and pressure inside a bubble are not high enough, then dim and spectral line emission dominates. However, if the temperature and pressure inside the bubble are very high, then the light is bright and a continuum spectrum will be generated. Calculations of the spectrum using modified equations of bubble motion can simulate the spectral profile well. However, pulse width calculations using these equations only partly agree with the experimental results.Cavitation luminescence is light emission from gases that are compressed to high temperature and high pressure inside a bubble or group of bubbles. The numerical simulation in this study indicates that if the temperature and pressure inside a bubble are not high enough, then dim and spectral line emission dominates. However, if the temperature and pressure inside the bubble are very high, then the light is bright and a continuum spectrum will be generated. Calculations of the spectrum using modified equations of bubble motion can simulate the spectral profile well. However, pulse width calculations using these equations only partly agree with the experimental results.

关 键 词：SONOLUMINESCENCE SPECTRUM pulse width 

分 类 号：O426.3[理学—声学] TP274.2[理学—物理]