Statistics – Applications
Scientific paper
Jan 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..504..662a&link_type=abstract
SPACE TECHNOLOGY AND APPLICATIONS INTERNATIONAL FORUM - 2000. AIP Conference Proceedings, Volume 504, pp. 662-668 (2000).
Statistics
Applications
Spaceborne And Space Research Instruments, Apparatus, And Components, Testing In Microgravity Environments, Thermodynamic Properties
Scientific paper
We review the opportunities for microgravity measurements of the thermal resistivity R(L,t) near the bulk superfluid-transition line Tλ(P) of 4He confined in cylindrical geometries with axial heat flow. A scaling function is used to estimate R as a function of the cylinder radius L and of the pressure P. These predictions are used to assess the effect of gravity on potential Earth-based measurements. Radii L>~8 μm can only be investigated fully in micro-gravity. At higher pressures the gravity effect is larger. At 30 bar samples with L>~4 μm require microgravity. Modern thermometry has sufficient resolution to permit quantitative measurements of the finite-size effect for L as large as 50 μm, the size chosen for the proposed ISS experiment BEST. .
Ahlers Guenter
Finley Paul
Genio Edgar
Kuehn Kerry
Liu Feng-Chuan
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