Detection of a flow induced magnetic field eigenmode in the riga dynamo facility

In a closed volume of molten sodium an intense single-vortex-like helical flow has been produced by an outside powered propeller. At a flow rate of 0.67 m(3)/s a slowly growing magnetic field eigenmode was detected. For a slightly lower flow, additional measurements showed a slow decay of this mode....

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Bibliographic Details
Published in:Physical review letters 2000-05, Vol.84 (19), p.4365-4368
Main Authors: Gailitis, A, Lielausis, O, Dement'ev, S, Platacis, E, Cifersons, A, Gerbeth, G, Gundrum, T, Stefani, F, Christen, M, Hanel, H, Will, G
Format: Article
Language:English
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Summary:In a closed volume of molten sodium an intense single-vortex-like helical flow has been produced by an outside powered propeller. At a flow rate of 0.67 m(3)/s a slowly growing magnetic field eigenmode was detected. For a slightly lower flow, additional measurements showed a slow decay of this mode. The measured results correspond satisfactorily with numerical predictions for the growth rates and frequencies.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.84.4365