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Electron vortex generation by strong, localized plasma heating
Ist Teil von
Physics of plasmas, 2001-09, Vol.8 (9), p.3957-3966
Erscheinungsjahr
2001
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
The generation of electron vortical structures by strong localized heating is investigated analytically and numerically. The structure formation and its dynamics are described by the model of electron magnetohydrodynamics, extended to include pressure effects. Magnetic structures are generated by the thermal electromotive force that arises due to nonalignment of pressure and density gradients. Their topology is determined by the heating power and the equilibrium density gradient. It is shown that strong localized heating of a nonuniform plasma generates vortical structures that are capable of confining and transporting heat across the plasma. The long term behavior of the structures agrees qualitatively with stationary equilibrium solutions. As these structures survive for rather long times, a filamentary profile of the temperature develops.
Sprache
Englisch
Identifikatoren
ISSN: 1070-664X
eISSN: 1089-7674
DOI: 10.1063/1.1389299
Titel-ID: cdi_scitation_primary_10_1063_1_1389299
Format
–
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