Onset of superfluidity in {sup 4}He films adsorbed on a graphite-fiber substrate

Journal Article · Sat Oct 31 23:00:00 EST 1992 · Journal of Low Temperature Physics

DOI:https://doi.org/10.1007/BF00694106· OSTI ID:138607

Burns, R N; Agnolet, G ^[1]

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1. Texas A & M Univ., College Station (United States)

A torsional oscillator technique has been employed to investigate the onset of superfluidity in {sup 4}He adsorbed on graphite fibers. A low temperature capacitance pressure gauge has been used to characterize the layered growth of the film as mass is added to the experimental cell. At T = 0.84 K the onset of superfluidity occurs after completion of three layers. A comparison with similar data for a Mylar substrate shows that the dissipation peaks are much sharper for the graphite-fiber substrate. 7 refs., 3 figs.

• Sponsoring Organization: USDOE
• OSTI ID: 138607
• Report Number(s): CONF-9206305--
• Journal Information: Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 3-4 Vol. 89; ISSN JLTPAC; ISSN 0022-2291
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CARBON FIBERS
CRITICAL TEMPERATURE
HELIUM 4
SUBSTRATES
SUPERFLUIDITY
TEMPERATURE RANGE 0000-0013 K
THIN FILMS