Výsledky vyhledávání - "G. N. Plenderleith"

Primary and Secondary Nucleation of the Transition between theAandBPhases of Superfluid3He

Autor: G. N. Plenderleith, George R. Pickett, Shaun N. Fisher, A. M. Guénault, M. Bartkowiak, Richard P. Haley, P. Skyba

Publikováno v: Physical Review Letters. 85:4321-4324

We have studied nucleation in superfluid 3He across the A-B phase transition driven by a magnetic field, in a controllable environment at very low temperatures. Both B-->A and A-->B secondary nucleation appear to be governed by the survival of pocket

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1eae6e7edc5c86b80ddf31406611e787
https://doi.org/10.1103/physrevlett.85.4321

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The thermodynamics of the A–B transition in superfluid 3He as a probe of the A-phase gap node geometry

Autor: G. N. Plenderleith, A. M. Guénault, P. Skyba, George R. Pickett, Richard P. Haley, M. Bartkowiak, Shaun N. Fisher

Publikováno v: Physica B: Condensed Matter. 280:108-111

We have used a magnetic field gradient to stabilise the phase boundary between the A- and B-phases of superfluid He-3 inside a quasiparticle black body radiator down to 146 mu K; The radiator technique enables us to measure very accurately the densit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9883e0689168d1075632b524d43c6ced
https://doi.org/10.1016/s0921-4526(99)01504-5

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Thermodynamics of theA−BPhase Transition and the Geometry of theA-Phase Gap Nodes in SuperfluidH3eat Low Temperatures

Autor: Shaun N. Fisher, P. Skyba, M. Bartkowiak, S. W. J. Daley, Richard P. Haley, G. N. Plenderleith, A. M. Guénault, George R. Pickett

Publikováno v: Physical Review Letters. 83:3462-3465

Since the A phase of superfluid He-3 has an energy gap with nodes while the B phase has a uniform gap, the entropies of the two phases are very different at low temperatures. The latent heat of the A-B transition is thus relatively large and provides

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f37c3868ff9d8419b8d2e346b2e17733
https://doi.org/10.1103/physrevlett.83.3462

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[Untitled]

Autor: I. E. Miller, D. J. Cousins, Pierre Thibault, A. M. Guénault, George R. Pickett, P. Skyba, M. G. Ward, Richard P. Haley, G. N. Plenderleith, Shaun N. Fisher

Publikováno v: Journal of Low Temperature Physics. 114:547-570

We have constructed a large new dilution refrigerator for use with the new Lancaster nuclear cooling facility. The machine is housed in a purpose-rebuilt suite of rooms and has been designed to have a very low base temperature, a very low heat leak e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c16a579ea78fb20f3e9a27452249746a
https://doi.org/10.1023/a:1021862406629

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[Untitled]

Autor: P. Skyba, George R. Pickett, A. M. Guénault, Richard P. Haley, Shaun N. Fisher, G. N. Plenderleith

Publikováno v: Journal of Low Temperature Physics. 113:651-659

We present preliminary measurements of the dynamics of a moving A-B phase interface in superfluid He-3 art temperatures below 0.2T(c). We initially stabilise the interface at lour temperatures with a shaped magnetic field. We can then move the interf

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f3ca0dd91545dc673a0a13fd6d58a6b4
https://doi.org/10.1023/a:1022541125193

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Asymmetrical nucleation of the A–B transition in superfluid 3He

Autor: G. N. Plenderleith, A. M. Guénault, P. Skyba, M. Bartkowiak, George R. Pickett, Shaun N. Fisher, Richard P. Haley

Publikováno v: Physica B: Condensed Matter. :242-243

Using a magnetic field we can induce nucleation in superfluid He-3 both ways across the A-B phase boundary, at temperatures below 0.2T(c). The nucleation takes place in a quasiparticle black-body radiator in a variable magnetic field profile and is d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f0873b3342d80a874206ad8deff757b4
https://doi.org/10.1016/s0921-4526(99)02485-0

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Forced oscillation of the A–B phase boundary in superfluid 3He

Autor: George R. Pickett, Shaun N. Fisher, G. N. Plenderleith, P. Skyba, M. Bartkowiak, A. M. Guénault, Richard P. Haley

Publikováno v: Physica B: Condensed Matter. :240-241

We present measurements conducted on the oscillating interface between superfluid He-3 A and B. The measurements, made at 150 mu K, are taken at frequencies between 100 mHz, where the boundary moves almost in thermal equilibrium with the fluid, and s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6b254f38c0bcb72589180076fbec830d
https://doi.org/10.1016/s0921-4526(99)02483-7

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