Andreev reflection, a tool to investigate vortex dynamics and quantum turbulence in He-3-B
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10291679" target="_blank" >RIV/00216208:11320/14:10291679 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1073/pnas.1312543110" target="_blank" >http://dx.doi.org/10.1073/pnas.1312543110</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1073/pnas.1312543110" target="_blank" >10.1073/pnas.1312543110</a>
Alternative languages
Result language
angličtina
Original language name
Andreev reflection, a tool to investigate vortex dynamics and quantum turbulence in He-3-B
Original language 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.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BK - Liquid mechanics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA14-02005S" target="_blank" >GA14-02005S: Cryogenic helium as a working fluid to study classical and quantum turbulence</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Proceedings of the National Academy of Sciences of the United States of America
ISSN
0027-8424
e-ISSN
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Volume of the periodical
111
Issue of the periodical within the volume
March 2014
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
4659-4666
UT code for WoS article
000342747200003
EID of the result in the Scopus database
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