科研之友
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摘要
The DC superfluid He mass flux through a cell filled with solid He diluted by ppm amounts of He is susceptible to flux changes when perturbations of the solid sample are imposed. We report on the details of the reproducibility of the flux following excursions in temperature and cryostat helium transfer-induced apparatus vibration, particularly including excursions to temperatures above which the flux is immeasurably small. And we report on behavior following an annealing, partial melting, and re-freezing of the sample at temperatures and pressures close to and on the melting curve.
- 出版日期2016-11
