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Mobility of Negative Ions in Superfluid 3He

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Ahonen, A. I. ; Kokko, J. ; Lounasmaa, O. V. ; Paalanen, M. A. ; Richardson, R. C. ; Schoepe, Wilfried ; Takano, Y.
Date of publication of this fulltext: 21 Dec 2010 06:36


We have found that the mobility of negative ions increases rapidly below Tc in both superfluid 3He phases. The ratio μ/μN of superfluid to normal mobility is larger in the B phase than in the A phase. A critical velocity consistent in magnitude with the Landau limit for pair breaking has also been observed. In the normal fluid we find a temperature-independent mobility between 30 mK and Tc for all pressures between 0 and 28 bars.

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