Nonlinear structures and anomalous transport in partially magnetized E×B plasmas
Abstract
Nonlinear dynamics of the electron-cyclotron instability driven by the electron E×B current in a crossed electric and magnetic field is studied. In the nonlinear regime, the instability proceeds by developing a large amplitude coherent wave driven by the energy input from the fundamental cyclotron resonance. Further evolution shows the formation of the long wavelength envelope akin to the modulational instability. Simultaneously, the ion density shows the development of a high-k content responsible for wave focusing and sharp peaks on the periodic cnoidal wave structure. It is shown that the anomalous electron transport (along the direction of the applied electric field) is dominated by the long wavelength part of the turbulent spectrum.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 29, 2017
- Source ID
- 10.1063/1.5001206
Entities
People
- A. I. Smolyakov
- Dmytro Sydorenko
- Igor Kaganovich
- Oleksandr Chapurin
- Salomon Janhunen
- Yevgeny Raitses
Organizations
- Air Force Office of Scientific Research
- Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada
- Princeton University
- University of Alberta
- University of Saskatchewan