Measurements of Third Sound Attenuation at T=1.35 K

Author： Luhman D.   Hallock R.  

Publisher： Springer Publishing Company

ISSN： 0022-2291

Source： Journal of Low Temperature Physics, Vol.148, Iss.5-6, 2007-09, pp. : 535-539

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Abstract

The results of measurements of ordinary third sound attenuation at T=1.35 K are reported. The attenuation is measured by using a continuous wave technique for frequencies up to 40 kHz. We find that for helium film thicknesses in the regime 5.09≤d≤9.90 layers the attenuation of third sound increases both with frequency and film thickness. We discuss our results in the context of previous work in this area.

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