NMR in Flowing Superfluid 3He in Confined Geometries
The transverse NMR of superfluid 3He A and B has been studied as a function of flow velocity in two different channel geometries. In the A phase, for the parallel plate geometry, a fraction or all of the signal was found to shift to lower frequencies with flow. In addition, the NMR signal of the flowing liquid developed a time dependent structure under certain conditions. The signal of the static liquid confined between parallel plates was found to split for a field angle of 45° relative to the plates and for temperatures near the A-B transition. None of the above effects was observed in the B phase.
KeywordsLarmor Frequency Channel Geometry Satellite Peak Cylindrical Channel Parallel Plate Geometry
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- (5).The time constant for the normal fluid to come to rest was calculated to be ~ 100 msec, for the cylindrical channel and ~ 0.1 msec, for the parallel plate geometry.Google Scholar