About: Andreev reflection, a tool to investigate vortex dynamics and quantum turbulence in He-3-B     Goto   Sponge   NotDistinct   Permalink

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Description
  • Andreev reflection of quasiparticle excitations provides a sensitive and passive probe of flow in superfluid He-3-B. It is particularly useful for studying complex flows generated by vortex rings and vortex tangles (quantum turbulence). We describe the reflection process and discuss the results of numerical simulations of Andreev reflection from vortex rings and from quantum turbulence. We present measurements of vortices generated by a vibrating grid resonator at very low temperatures. The Andreev reflection is measured using an array of vibrating wire sensors. At low grid velocities, ballistic vortex rings are produced. At higher grid velocities, the rings collide and reconnect to produce quantum turbulence. We discuss spatial correlations of the fluctuating vortex signals measured by the different sensor wires. These reveal detailed information about the formation of quantum turbulence and about the underlying vortex dynamics.
  • Andreev reflection of quasiparticle excitations provides a sensitive and passive probe of flow in superfluid He-3-B. It is particularly useful for studying complex flows generated by vortex rings and vortex tangles (quantum turbulence). We describe the reflection process and discuss the results of numerical simulations of Andreev reflection from vortex rings and from quantum turbulence. We present measurements of vortices generated by a vibrating grid resonator at very low temperatures. The Andreev reflection is measured using an array of vibrating wire sensors. At low grid velocities, ballistic vortex rings are produced. At higher grid velocities, the rings collide and reconnect to produce quantum turbulence. We discuss spatial correlations of the fluctuating vortex signals measured by the different sensor wires. These reveal detailed information about the formation of quantum turbulence and about the underlying vortex dynamics. (en)
Title
  • Andreev reflection, a tool to investigate vortex dynamics and quantum turbulence in He-3-B
  • Andreev reflection, a tool to investigate vortex dynamics and quantum turbulence in He-3-B (en)
skos:prefLabel
  • Andreev reflection, a tool to investigate vortex dynamics and quantum turbulence in He-3-B
  • Andreev reflection, a tool to investigate vortex dynamics and quantum turbulence in He-3-B (en)
skos:notation
  • RIV/00216208:11320/14:10291679!RIV15-GA0-11320___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA14-02005S)
http://linked.open...iv/cisloPeriodika
  • March 2014
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
  • Jackson, Martin James
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 3269
http://linked.open...ai/riv/idVysledku
  • RIV/00216208:11320/14:10291679
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • quantized vortices; Richardson cascade; Kolmogorov spectrum; vortex reconnection (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [FE015BD0FD2B]
http://linked.open...i/riv/nazevZdroje
  • Proceedings of the National Academy of Sciences of the United States of America
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 111
http://linked.open...iv/tvurceVysledku
  • Sergeev, Yuri A.
  • Fisher, Shaun Neil
  • Jackson, Martin James
  • Tsepelin, Viktor
http://linked.open...ain/vavai/riv/wos
  • 000342747200003
issn
  • 0027-8424
number of pages
http://bibframe.org/vocab/doi
  • 10.1073/pnas.1312543110
http://localhost/t...ganizacniJednotka
  • 11320
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