中国物理B ›› 2012, Vol. 21 ›› Issue (1): 17806-017806.doi: 10.1088/1674-1056/21/1/017806

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The characteristics of sonoluminescence

安宇, 张文娟   

  1. Department of Physics, Tsinghua University, Beijing 100084, China
  • 收稿日期:2011-05-17 修回日期:2011-06-25 出版日期:2012-01-15 发布日期:2012-01-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10974116).

The characteristics of sonoluminescence

An Yu(安宇) and Zhang Wen-Juan(张文娟)   

  1. Department of Physics, Tsinghua University, Beijing 100084, China
  • Received:2011-05-17 Revised:2011-06-25 Online:2012-01-15 Published:2012-01-20
  • Supported by:
    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.

关键词: sonoluminescence, spectrum, pulse width

Abstract: 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.

Key words: sonoluminescence, spectrum, pulse width

中图分类号:  (Sonoluminescence, triboluminescence)

  • 78.60.Mq
32.30.-r (Atomic spectra?) 33.20.-t (Molecular spectra)