液体ヘリウムII中の熱の移動

細いスリットの場合

抄録

F. London and P. R. Zilsel⁽¹⁾ developped the theory of heat transfer in liquid helium II through a slit. Their formula shows only partial agreement with the measurements. Especially in the measurement of heat transfer through a very narrow slit, the discrepancy is remarkable.
Tomita, Nakajima and Usui⁽²⁾ have refined the “two fluid model” by introducing the mutual friction between the superfluid and the normal component as Gorter⁽³⁾ had suggested preriously. But in very narrow slite their formula coincides with London-Zilsel's formula and therefore does not agree with the experiments.
Assuming a film of pure superfluid on the wall and introducing a mutual friction somewhat different from that suggested by Gortes, we could get a fairly good agreement with the experiments including the case of very narrow slits. The London-Zilsel's formula is also included as a special case of our formula.