Preferred Flow Rates in the Helium II Film

  • R. F. Harris-Lowe
  • R. R. Turkington


We wish to report on our most recent results in an extended series of experiments designed to investigate the reproducibility of helium film flow rates out of a Pyrex beaker at a temperature of 1.35°K. The experimental apparatus and procedures are described in detail elsewhere.1 The basic technique involved the use of a coaxial capacitance depth gauge and associated bridge circuit to monitor changes in the helium level in the beaker. The method allowed an accurate determination of the flow rate every 10 sec. A fountain pump in the experiment space was used to change the level in the beaker by controlled amounts.


Critical Velocity Optical Data Experiment Space Helium Surface Height Dependence 
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  1. 1.
    R. R. Turkington and R. F. Harris-Lowe, J. Low Temp. Phys. 10 (to be published).Google Scholar
  2. 2.
    L. C. Jackson and L. G. Grimes, Phil. Mag. 7, 454 (1958).Google Scholar
  3. 3.
    R. F. Harris-Lowe, C. F. Mate, K. L. McCloud, and J. G. Daunt, Phys. Leu. 20, 126 (1966).ADSGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1974

Authors and Affiliations

  • R. F. Harris-Lowe
    • 1
  • R. R. Turkington
    • 1
  1. 1.Royal Military CollegeKingstonCanada

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