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  • 78.60.Mq  (2)
  • 1995-1999  (2)
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  • 1995-1999  (2)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Theory of sonoluminescence in single bubbles: Flexoelectric energy contribution (1998)
    Springer
    JETP letters 68 (1998), S. 472-479 
    Details
    ISSN: 1090-6487
    Keywords: 78.60.Mq
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An equation of motion for a cavitating gas bubble immersed in a liquid is introduced which includes a flexoelectric energy term. This energy is deduced from the electric field produced by the bubble wall acceleration (pressure gradient) in the fluid (the flexoelectric effect). We show that under conditions of sonoluminescence, this electric field reaches values typical of the electric breakdown field in water. Our theoretical results are consistent with the duration of light emission, minimum bubble radius, and energy release as measured in sonoluminescence experiments in water.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.567892
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Scenario of the electric breakdown and UV radiation spectra in single-bubble sonoluminescence (1999)
    Springer
    JETP letters 70 (1999), S. 431-437 
    Details
    ISSN: 1090-6487
    Keywords: 43.35.Hl ; 78.60.Mq ; 47.55.Dz
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In a preceding paper we put forward the hypothesis that the single-bubble sonoluminescence (SBSL) is caused by strong electric fields arising near the surface of a collapsing gas bubble on account of the flexoelectric effect in water. Here we argue that these fields can indeed provoke a multiple electric breakdown in water, in a micron-size region near the surface of the collapsing gas bubble, and show that the main numerical characteristics of the SBSL can be naturally explained within this mechanism. The SBSL spectra are determined by radiative transitions between high-energy levels of noble-gas atoms excited by hot electrons produced by the strong flexoelectric field in “cold” water.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.568192
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    Paper (German National Licenses)
    Fulltext
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