Spectroscopic observation of fluctuation-induced dynamo in the edge of the reversed-field pinch |
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Authors: | Fontana P W Den Hartog D J Fiksel G Prager S C |
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Affiliation: | Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA. |
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Abstract: | The fluctuation-induced dynamo has been investigated by direct measurement of v and b in the edge of a reversed-field pinch and is found to be significant in balancing Ohm's law. The velocity fluctuations producing the dynamo emf have poloidal mode number m = 0, consistent with MHD calculations and in contrast with the core m = 1 dynamo. The velocity fluctuations exhibit the parity relative to their resonant surface predicted by linear MHD theory. |
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