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Paper   IPM / P / 7304
School of Physics
  Title:   Effects of Liquid Second Viscosity in High-Amplitude Sonoluminescence
1.  A. Moshaii
2.  Rasool Sadeghi-Bonabi
3.  Mohammad Taeibi-Rahni
4.  Mehdi Daemi
  Status:   Published
  Journal: Chin.Phys.Lett
  No.:  2
  Vol.:  21
  Year:  2004
  Pages:   356-359
  Supported by:  IPM
The well-known Rayleigh�Plesset (RP) equation is the base of nearly all hydrodynamical descriptions of the sonoluminescence phenomenon. A major deficiency of this equation is that it accounts for viscosity of an incompressible liquid and compressibility, separately. By removing this approximation, we have modified the RP equation, considering effects of liquid second viscosity. This modification exhibits its importance at the end of an intense collapse, so that the new model predicts the appearance of a new picosecond bouncing during high-amplitude sonoluminescence radiation. This new bouncing produces very sharp (sub-picosecond) peaks on the top of the sonoluminescence pulse. These new behaviours are more remarkable for higher driving pressures and lower ambient temperatures

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