Onset of superfluidity in4He films adsorbed on a graphite-fiber substrate
| Autor: | Robert N. Burns, Glenn Agnolet |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Condensed matter physics
Condensed Matter::Other Substrate (electronics) Dissipation Condensed Matter Physics Capacitance Atomic and Molecular Physics and Optics law.invention Superfluidity Condensed Matter::Materials Science Helium-4 Pressure measurement law General Materials Science Graphite Thin film |
| Zdroj: | Journal of Low Temperature Physics. 89:641-644 |
| ISSN: | 1573-7357 0022-2291 |
| Popis: | A torsional oscillator technique has been employed to investigate the onset of superfluidity in4He 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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