Generation of zonal magnetic fields by drift waves in a current carrying nonuniform magnetoplasma
2010 (English)In: Physics Letters A, ISSN 0375-9601, Vol. 374, no 24, 2461-2463 p.Article in journal (Refereed) Published
It is shown that zonal magnetic fields (ZMFs) can be nonlinearly excited by incoherent drift waves (DWs) in a current carrying nonuniform magnetoplasma. The dynamics of incoherent DWs in the presence of ZMFs is governed by a wave-kinetic equation. The governing equation for ZMFs in the presence of nonlinear advection force of the DWs is obtained from the parallel component of the electron momentum equation and the Faraday law. Standard techniques are used to derive a nonlinear dispersion relation, which depicts instability via which ZMFs are excited in plasmas. ZMFs may inhibit the turbulent cross-field particle and energy transport in a nonuniform magnetoplasma.
Place, publisher, year, edition, pages
2010. Vol. 374, no 24, 2461-2463 p.
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:umu:diva-109709DOI: 10.1016/j.physleta.2010.04.016ISI: 000278284000011OAI: oai:DiVA.org:umu-109709DiVA: diva2:858900