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Heat capacity measurements of ^4He at constant heat flux near T_λ

Harter, Alexa W. and Lee, Richard A. M. and Chui, Talso C. P. and Goodstein, David L. (2000) Heat capacity measurements of ^4He at constant heat flux near T_λ. Physica B, 284-288 (1). pp. 53-54. ISSN 0921-4526. doi:10.1016/S0921-4526(99)02016-5.

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The heat capacity, C_Q, of superfluid ^4He in the presence of a constant heat flux, Q, is expected to diverge at a depressed transition temperature, T_c(Q). We have taken preliminary measurements of C_Q at various heat flux values in the range 1 µW/cm^2 ≤ Q ≤ 4 µW/cm^2. We observe that at sufficiently small reduced temperatures, C_Q is enhanced as a function of Q, and that the enhancement is larger than theoretical predictions by Chui et al. and Hausmann and Dohm (Phys. Rev. Lett 77 (1996) 980, 1793; preprint).

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Lee, Richard A. M.0000-0001-6509-697X
Additional Information:© 2000 Elsevier Science B.V. Available online 2 October 2000. We are grateful to G. Ahlers for providing us with his measurements of the singular boundary resistance, and to Xinkai Wu for his assistance. This research was carried out in a collaboration between the Jet Propulsion Laboratory and the Physics Department of the California Institute of Technology under a contract with National Aeronautics and Space Administration.
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Subject Keywords:Heat capacity; 4He liquid λ transition; Phase transition
Issue or Number:1
Record Number:CaltechAUTHORS:20151215-072343760
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Official Citation:Alexa W Harter, Richard A.M Lee, Talso C.P Chui, David L Goodstein, Heat capacity measurements of 4He at constant heat flux near Tλ, Physica B: Condensed Matter, Volumes 284–288, Part 1, July 2000, Pages 53-54, ISSN 0921-4526, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:62915
Deposited By: Ruth Sustaita
Deposited On:15 Dec 2015 17:12
Last Modified:10 Nov 2021 23:08

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