Oscillating Ponomarenko dynamo in the highly conducting limit

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dc.creatorPeyrot, Marine
dc.creatorGilbert, Andrew
dc.creatorPlunian, Franck
dc.date2009-05-04
dc.date.accessioned2026-07-07T13:11:28Z
dc.date.available2026-07-07T13:11:28Z
dc.descriptionThis paper considers dynamo action in smooth helical flows in cylindrical geometry, otherwise known as Ponomarenko dynamos, with periodic time dependence. An asymptotic framework is developed that gives growth rates and frequencies in the highly conducting limit of large magnetic Reynolds number, when modes tend to be localized on resonant stream surfaces. This theory is validated by means of numerical simulations.
dc.description12 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0905.0415
dc.identifierhttp://arxiv.org/abs/0905.0415
dc.identifierPhys. Plasmas 15, 122104 (2008)
dc.identifierdoi:10.1063/1.3035911
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/229293
dc.subjectPlasma Physics
dc.subjectGeophysics
dc.titleOscillating Ponomarenko dynamo in the highly conducting limit
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