Film Flow and Bulk Formation of Helium II in Capillaries
- 15 September 1954
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 95 (6) , 1365-1368
- https://doi.org/10.1103/PhysRev.95.1365
Abstract
The formation and maintenance of bulk liquid in capillaries caused by the mobile film flowing from a liquid helium II bath below the capillaries has been observed. Experiments with parallel plates, cylindrical capillaries, and annular capillaries indicate that bulk will form initially only when the width of the capillary space is below some critical value, depending on the geometry. However, bulk liquid once present in a capillary will be maintained by the film even if the width is greater than the critical value for initial formation. Measurements of film flow rates and equilibrium capillary rise in these capillaries give values in agreement with measurements of these quantities, under other experimental conditions, made by various other observers. The effects observed are discussed in terms of the known properties of liquid helium II.Keywords
This publication has 7 references indexed in Scilit:
- Capillarity in Helium IIPhysical Review B, 1953
- Visual observations of the formation of bulk liquid from the helium II filmJournal of Computers in Education, 1953
- II. Further observations on the helium II film by an optical methodJournal of Computers in Education, 1953
- Film Transfer in Helium II: IV - The Transfer Rate on Glass and MetalsProceedings of the Physical Society. Section A, 1950
- The velocity of flow of helium II in the creeping filmJournal of Computers in Education, 1950
- Liquid helium films. I. The thickness of the filmProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1950
- The surface tension of liquid heliumMathematical Proceedings of the Cambridge Philosophical Society, 1938