Abstract
The critical current Jc of superfluid He3-A in 0.8-μm-diam channels has been measured by the observation of the pressure difference along the channels versus the mass current. During warming Jc was found to decrease by about 30% at TBA(cyl) and by another 30% at TBA; TBA(cyl) is the reduced B→A transition temperature in the narrow flow channels, with TBA(cyl)TBA=0.92 at 27.4 bars. Above TBA a second dissipative mechanism was observed at lower currents. These features are believed to be associated with the ends of the channels.
Original language | English |
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Pages (from-to) | 5233-5236 |
Number of pages | 4 |
Journal | Physical Review B |
Volume | 26 |
Issue number | 9 |
DOIs | |
Publication status | Published - 1982 |
MoE publication type | A1 Journal article-refereed |