Thermal transport and the Kosterlitz-Thouless transition in 4He films
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We report preliminary studies of thermally driven flow in helium films near the superfluid transition. Experiments using a modified torsional oscillator allow simultaneous measurements of the thermal conductance, superfluid mass and vortex dissipation of the film. Data are analyzed in terms of the Kosterlitz-Thouless theory. 1981.