Abstract
It has been predicted that the heat capacity of superfluid 4 He will diverge strongly at a depressed transition temperature in the presence of a constant heat flux, Q. We have built a cell to measure this effect, and have taken preliminary measurements at various heat flux values. Our data indicate an enhancement of the heat capacity that varies as a function of Q. However, the temperature dependence of our measurements leads us to believe that our initial findings were affected by spurious heat flow.
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Harter, A., Lee, R.A.M., Chui, T. et al. Measuring the Heat Capacity of Superfluid 4He in the Presence of a Heat Flux Near Tλ: Progress and Prospects. Journal of Low Temperature Physics 113, 549–554 (1998). https://doi.org/10.1023/A:1022528901745
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DOI: https://doi.org/10.1023/A:1022528901745