Helium Flow Through an Orifice in the Presence of an AC Sound Field
We report here an attempt to observe the ac Josephson effect in liquid helium. Previous investigators1–5 have reported positive observation of the effect by monitoring the level difference between two baths separated by a small orifice. Our experiment was designed so that a temperature difference could be introduced and measured as well.
KeywordsLevel Difference Helium Flow Josephson Effect Chemical Potential Difference Small Orifice
Unable to display preview. Download preview PDF.