Abstract
Employing path length modulation technique, we are able to make high resolution sound velocity measurements (≈ 10 ppm) with a relatively short path length. We present new values ofF 32 calculated from zeroand first-sound velocity measurements at 12.6 MHz in liquid3He over the pressure range of 0.6 to 14 bar. We also report a newly observed behavior in high frequency zero-sound velocity at 113 MHz near the superfluid transition temperature at 0.6 bar.
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References
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We acknowledge useful discussions from Prof. J. Sauls and Prof. M. Meisel. This work is supported by the National Science Foundation grant DMR-9314025.
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Lee, Y., Hamot, P.J., Sprague, D.T. et al. High resolution sound velocity measurement in liquid3He using path length modulation technique. Czech J Phys 46 (Suppl 1), 59–60 (1996). https://doi.org/10.1007/BF02569445
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DOI: https://doi.org/10.1007/BF02569445