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Effects of thermal conduction in sonoluminescence

Hickling, Robert (1962) Effects of thermal conduction in sonoluminescence. California Institute of Technology , Pasadena, CA.

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Current experimental results indicate that sonoluminescence is largely thermal in origin, with the spectra showing a direct relation between luminous intensity and the temper ature s generated inside the collapsing cavitation bubbles. In the present paper the strong dependence of the luminous intensity on the nature of the gas dissolved in the liquid is explained in terms of thermal conduction. Provided the cavitation bubbles are sufficiently small, loss of heat from the bubble into the liquid can significantly reduce the temperatures attained during collapse, so that there is a consequent reduction in the luminous intensity. This process is demonstrated analytically by means of a numerical solution of the equations of motion of a gas inside a collapsing cavitation bubble. The agreement between the theory and the observed luminous intensities for different dissolved gases is good.

Item Type:Report or Paper (Technical Report)
Additional Information:Office of Naval Research, Department of the Navy, Contract Nonr-220(28), Engineering Division Report No. 85-21, November 1962.
Funding AgencyGrant Number
Office of Naval Research (ONR)Nonr-220(28)
Record Number:CaltechAUTHORS:EngDivRpt85-21
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9363
Deposited By: Archive Administrator
Deposited On:16 Dec 2007
Last Modified:02 Oct 2019 23:59

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