Effect of gravity on the thermal conductivity measurement of 4He near Tλ

F. C. Liu, R. Duncan, U. Israelsson, T. Chui, D. Hensinger, A. Nash, M. Adriaans, W. Moeur

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Abstract

Precision measurements near the superfluid(λ) transition of 4He is linfited by a gravity induced inhomogeneity in Tλ. Critical Dynamics in Microgravity(DYNAMX, a NASA preproject) will study the thermal conductivity in the nonlinear region in Microgravity. Unlike the study of static properties, the thermal conductivity can be derived from the measurement of the spatial temperature profile which is essentially a local measurement of the temperature gradient. We present a method which, in principle, fully removes the apparent impact of gravity from the measurement. The inevitably finite spatial resolution of the probe and temperature resolution of the thermometer, however, make microgravity essential to study the region of interest.

Original languageEnglish
Pages (from-to)87-88
Number of pages2
JournalCzechoslovak Journal of Physics
Volume46
Issue numberSUPPL. 1
DOIs
StatePublished - 1996

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    Liu, F. C., Duncan, R., Israelsson, U., Chui, T., Hensinger, D., Nash, A., Adriaans, M., & Moeur, W. (1996). Effect of gravity on the thermal conductivity measurement of 4He near Tλ. Czechoslovak Journal of Physics, 46(SUPPL. 1), 87-88. https://doi.org/10.1007/BF02569459