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DOI: 10.1007/s10909-006-9278-5 Journal of Low Temperature Physics ( 2007)

Summary: DOI: 10.1007/s10909-006-9278-5
Journal of Low Temperature Physics ( 2007)
Finite-size Effects on the Thermal Resistivity of 4
Near the Superfluid Transition
Sergei Jerebets,1 Yuanming Liu,1 Fengchuan Liu,1 and Guenter Ahlers2
1Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
E-mail: jerebets@jpl.nasa.gov
2Department of Physics and iQCD, University of California, Santa Barbara, CA 93106, USA
E-mail: guenter@physics.ucsb.edu
We present measurements of the thermal resistivity (t,L) (t T /T - 1)
near the superfluid transition temperature T of 4He at saturated vapor pres-
sure and confined in glass capillary arrays with rectangular capillary cross-
sections of spacing L = 1 m, width w = 10m, and length d 1 mm. We
expect the finite-size effect in this rectangular geometry to provide a good
approximation to that in the ideal parallel-plate geometry. The data coincide
within our resolution with previous measurements for cylindrical capillaries
of 1 m radius, indicating that the finite-size scaling-functions for these two
geometries are indistinguishable. This stands in contrast to the scaling func-
tions for static properties which, near the transition temperature, depend on


Source: Ahlers, Guenter - Department of Physics, University of California at Santa Barbara


Collections: Physics