| Low temperature attenuation of sound in restricted geometries (1980) | |||||||||||||||
Abstract | |||||||||||||||
| We have measured the low temperature attenuation of sound at 1 GHz in liquid helium confined in the pores of Vycor glass; our data clearly show the one-dimensional behaviour of the normal density in this restricted geometry; the experimental value is in agreement with fourth sound measurements; anyway the experimental values are three orders of magnitude larger than the theoretical one. | |||||||||||||||
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