Detection of a flow induced magnetic field eigenmode in the Riga dynamo facility
Agris Gailitis, Olgerts Lielausis, Sergej Dement'ev, Ernests Platacis, Arnis Cifersons, Gunter Gerbeth, Thomas Gundrum, Frank Stefani, Michael Christen, Heiko Hänel, Gotthard Will
Abstract
In an experiment at the Riga sodium dynamo facility, a slowly growing magnetic field eigenmode has been detected over a period of about 15 seconds. For a slightly decreased propeller rotation rate, additional measurements showed a slow decay of this mode. The measured results correspond satisfactory with numerical predictions for the growth rates and frequencies.
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