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APS » Journals » Phys. Rev. Lett. » Volume 84 » Issue 19
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Phys. Rev. Lett. 84, 4365–4368 (2000)

Detection of a Flow Induced Magnetic Field Eigenmode in the Riga Dynamo Facility

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Agris Gailitis, Olgerts Lielausis, Sergej Dement'ev, Ernests Platacis, and Arnis Cifersons
Institute of Physics, Latvian University, LV-2169 Salaspils 1, Riga, Latvia

Gunter Gerbeth, Thomas Gundrum, and Frank Stefani
Forschungszentrum Rossendorf, P.O. Box 510119, D-01314 Dresden, Germany

Michael Christen, Heiko Hänel, and Gotthard Will
Department of Mechanical Engineering, Dresden University of Technology, P.O. Box 01062, Dresden, Germany

Received 10 December 1999; published in the issue dated 8 May 2000

See accompanying Physics Focus

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 0.67m3/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.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.4365
DOI:
10.1103/PhysRevLett.84.4365
PACS:
47.65.+a, 52.65.Kj, 91.25.Cw
 
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