Vibrational Relaxation Effects in Hydrodynamic Models for Sonoluminescence : Classical Phenomenology and Applications

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概要

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• An hydrodynamic model for sonoluminescence in diatomic gases, taking into account vibrational relaxation effects is presented. Allowing for heat conduction at the bubble boundary and using the Gilmore approximation for the bubble radius equation, it is possible to obtain different maximum gas temperatures associated to translational/rotational degrees of freedom and to vibrational ones. The difference in maximum temperatures should be negligible in the case of oxygen but it should reach large values in the case of nitrogen. This indicates that care should be taken when amounts of dissociation and/or amounts of ionization are estimated in sonoluminescence, starting from the thermodynamic equilibrium hypotheses. It may happen that the velocity of the bubble collapse is so high that such kinds of processes have no sufficient time to develop .

• 社団法人日本物理学会の論文
• 2000-09-15

著者

• Clemente R

  Univ. Estadual De Campinas Sp Bra

• Clemente Roberto

  Instituto De Fisica Gleb Wataghin Unicamp

• Clemente Roberto

  Instituto De Fisica Gleb Wataghin

• XAVIER Christine

  Instituto de Fisica Gleb Wataghin

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