Abstract
The propagation of 5-, 15-, and 25-MHz sound in superfluid 3He has been studied in zero magnetic field over a wide pressure range. Measurements of the structure and location of the attenuation peaks, velocity changes, and the low-temperature attenuation are described. The degree of strong coupling in the B phase is discussed. Observations of superheating and supercooling near the polycritical point have been extended and comparison is made with theory.
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Work supported by the U.S. Energy Research and Development Administration under Contract No. E(04-3)-34, P.A. 143.
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Paulson, D.N., Kleinberg, R.L. & Wheatley, J.C. Zero-sound studies in superfluid 3He. J Low Temp Phys 23, 725–741 (1976). https://doi.org/10.1007/BF00116306
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DOI: https://doi.org/10.1007/BF00116306