X-Ray-Induced Thinning of 3He and 3He/4He Mixture Films

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X-Ray-Induced Thinning of 3He and 3He/4He Mixture Films

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dc.contributor.author Penanen, Konstantin
dc.contributor.author Fukuto, Masafumi
dc.contributor.author Silvera, Isaac F.
dc.contributor.author Pershan, Peter S.
dc.date.accessioned 2010-09-01T14:47:49Z
dc.date.issued 2000
dc.identifier.citation Penanen, Konstantin, Masafumi Fukuto, Isaac F. Silvera, and Peter S. Pershan. 2000. X-ray-induced thinning of 3He and 3He/4He mixture films. Physical Review B 62(14): 9641-9647. en_US
dc.identifier.issn 1098-0121 en_US
dc.identifier.uri http://nrs.harvard.edu/urn-3:HUL.InstRepos:4419628
dc.description.abstract Films of isotopic mixtures of helium have been studied using x-ray specular reflectivity techniques. In contrast with superfluid 4He films, x-ray exposure causes a reduction in the thickness of 4He films above the superfluid transition as well as films of pure 3He and 3He/4He mixtures. One proposed model that could account for this effect is a charging model, in which thinning is caused by electrostatic pressure of free charges that accumulate on the helium surface. Unfortunately, this model is not fully consistent with all of the experimental observations. A localized heating model, in which indirect heating of the film causes it to thin would explain the data if there were dissipative film flow in the 3He/4He mixtures at temperatures where the bulk is superfluid. We argue that various published experimental results suggest such an effect. In this model, film thinning data for dilute 3He/4He films indicates dissipation that is linear in 3He content of the film over two orders of magnitude. en_US
dc.description.sponsorship Engineering and Applied Sciences en_US
dc.language.iso en_US en_US
dc.publisher American Physical Society en_US
dc.relation.isversionof doi:10.1103/PhysRevB.62.9641 en_US
dc.relation.hasversion http://liquids.deas.harvard.edu/peter/2000.pdf/00_7_He3.thin.pdf en_US
dash.license META_ONLY
dc.title X-Ray-Induced Thinning of 3He and 3He/4He Mixture Films en_US
dc.type Journal Article en_US
dc.description.version Version of Record en_US
dc.relation.journal Physical Review -Series B- en_US
dash.depositing.author Pershan, Peter S.
dash.embargo.until 10000-01-01

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  • FAS Scholarly Articles [7470]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University

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