Flow of 3He-B through narrow channels

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Original languageEnglish
Pages (from-to)812-816
Number of pages5
JournalPhysical Review Letters
Volume48
Issue number12
Publication statusPublished - Mar 1982
MoE publication typeA1 Journal article-refereed

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Abstract

The critical current Jc of superfluid 3He-B through 0.8-μm-diam channels has been measured. For small currents the pressure difference ΔP=0 along the flow channels within the resolution, implying small or zero dissipation. ΔP grows rapidly with increasing current above Jc; a clear transition to dissipative flow is thus observed. The temperature dependence of Jc indicates that the superfluid density and the critical temperature are reduced inside the narrow flow channels.

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