Anomalous ion radius near the λ transition

F. Scaramuzzi, A. Savoia, D. L. Goodstein, M. W. Cole

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Measurements have been made of the shear viscosity eta and the positive ion mobility mu along the melting curve in liquid 4He, passing through the lambda triple point. The effective radius of the ion, defined by Stokes' law, shows a maximum 40 mK below the triple point. This and similar behaviour observed previously by Ahlers and Gamota at saturated vapour pressure are explained by the presence of normal fluid in the immediate vicinity of the ion due to the electrostrictive increase in pressure. The maximum observed at the melting curve is evidence that the lambda line continues into the region of supercooled liquid.

Original languageEnglish (US)
Article number004
Pages (from-to)L413-L416
JournalJournal of Physics C: Solid State Physics
Issue number15
StatePublished - 1977

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • General Engineering
  • General Physics and Astronomy


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