Tcp. Chui et al., MEASUREMENT OF THE HEAT-CAPACITY OF HELIUM UNDER SUPERFLUID FLOW CONDITIONS NEAR THE LAMBDA-TRANSITION, Physica. B, Condensed matter, 194, 1994, pp. 601-602
A proposed experiment to measure the heat capacity of helium under sup
erfluid flow condition near the lambda transition is discussed. This e
xperiment would clarify the role of the superfluid density depression
versus the role of the intrinsic critical velocity, in the description
of the property of helium.