Abstract
New rate measurements of the flow of the saturated helium film out of a Pyrex beaker, employing a capacitance depth gauge technique, have been obtained. The high resolution has allowed us to observe the occurrence of transitions as small as1 1/2% of the flow rate. Such transitions are much smaller than any previously observed or expected from earlier measurements, which resulted in a preferred flow-rate hypothesis. Even so, the results do establish that some form of a preferred flow-rate structure is a fundamental feature of helium-film transport.
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References
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The research for this paper was supported by the Defence Research Board of Canada, Grant No. 9510–23.
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Turkington, R.R., Harris-Lowe, R.F. Distribution of flow rates in the helium II film. J Low Temp Phys 10, 369–377 (1973). https://doi.org/10.1007/BF00654915
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DOI: https://doi.org/10.1007/BF00654915