Localized excitations in a nonlinearly coupled magnetic drift wave-zonal flow system
2010 (English)In: Physics Letters A, ISSN 0375-9601, Vol. 374, no 13-14, 1514-1516 p.Article in journal (Refereed) Published
We consider the amplitude modulation of the magnetic drift wave (MOW) by zonal flows (ZFs) in a nonuniform magnetoplasma. For this purpose, we use the two-fluid model to derive a nonlinear Schrodinger equation for the amplitude modulated MDWs in the presence of the ZF potential, and an evolution equation for the ZF potential which is reinforced by the nonlinear Lorentz force of the MDWs. Our nonlinearly coupled MDW-ZFs system of equations admits stationary solutions in the form of a localized MDW envelope and a shock-like ZF potential profile.
Place, publisher, year, edition, pages
Elsevier, 2010. Vol. 374, no 13-14, 1514-1516 p.
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:umu:diva-109634DOI: 10.1016/j.physleta.2010.01.050ISI: 000276144400021OAI: oai:DiVA.org:umu-109634DiVA: diva2:858590