Persistent-Current Experiments on Superfluid 3He-B and 3He-A

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorPekola, Jukka P.
dc.contributor.authorSimola, J. T.
dc.contributor.authorNummila, K. K.
dc.contributor.authorLounasmaa, O. V.
dc.contributor.authorPackard, R. E.
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.departmentTeknillisen fysiikan laitosfi
dc.contributor.schoolPerustieteiden korkeakoulufi
dc.contributor.schoolSchool of Scienceen
dc.date.accessioned2015-05-22T09:02:00Z
dc.date.available2015-05-22T09:02:00Z
dc.date.issued1984
dc.description.abstractWe have investigated persistent flow of superfluid 3He with an ac gyroscope filled with 20-μm powder. In 3He-B, currents circulate undiminished for 48 h at least; this implies a viscosity 12 orders of magnitude lower than in the normal fluid. In 3He-A, the current does not persist. The observed critical velocity in 3He-B at P<~12 bars is independent of temperature. At P>12 bars there are two regimes in the B phase: For example, at 29.3 bars the ultimate critical velocities are 5.4 and 7.8 mm/s, respectively.en
dc.description.versionPeer revieweden
dc.format.extent70-73
dc.format.mimetypeapplication/pdfen
dc.identifier.citationPekola, Jukka & Simola, J. T. & Nummila, K. K. & Lounasmaa, O. V. & Packard, R. E. 1984. Persistent-Current Experiments on Superfluid 3He-B and 3He-A. Physical Review Letters. Volume 53, Issue 1. P. 70-73. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.53.70.en
dc.identifier.doi10.1103/physrevlett.53.70
dc.identifier.issn0031-9007 (printed)
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/16196
dc.identifier.urnURN:NBN:fi:aalto-201505222849
dc.language.isoenen
dc.publisherAmerican Physical Society (APS)en
dc.relation.ispartofseriesPhysical Review Lettersen
dc.relation.ispartofseriesVolume 53, Issue 1
dc.rights© 1984 American Physical Society (APS). http://www.aps.org/en
dc.rights.holderAmerican Physical Society (APS)
dc.subject.keywordsuperfluidsen
dc.subject.keywordcurrentsen
dc.subject.otherPhysicsen
dc.titlePersistent-Current Experiments on Superfluid 3He-B and 3He-Aen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.dcmitypetexten
dc.type.versionFinal published versionen

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