Published July 2000
| public
Journal Article
Heat capacity measurements of ^4He at constant heat flux near T_λ
Abstract
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).
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.Additional details
- Eprint ID
- 62915
- Resolver ID
- CaltechAUTHORS:20151215-072343760
- NASA/JPL/Caltech
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2015-12-15Created from EPrint's datestamp field
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2021-11-10Created from EPrint's last_modified field