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Published March 6, 2000 | Published
Journal Article Open

Enhanced heat capacity and a new temperature instability in superfluid He-4 in the presence of a constant heat flux near T-lambda


We present the first experimental evidence that the heat capacity of superfluid 4He, at temperatures very close to the lambda point Tλ, is enhanced by a constant heat flux Q. The heat capacity at constant Q, CQ, is predicted to diverge at a temperature Tc(Q)

Additional Information

© 2000 The American Physical Society. Received 30 August 1999. We are grateful to P. Day for his help in the design of the cell, to G. Ahlers, R. Duncan, and R. Haussmann for providing us with their data, and to R. Duncan, R. Haussmann, and P. Weichman for many helpful discussions. The research reported in this paper was carried out in collaboration between Caltech and JPL under a contract with NASA.

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