Structure of nonlocal gradient-drift instabilities in Hall E × B discharges
Abstract
Gradient-drift (collisionless Simon-Hoh) instability is a robust instability often considered to be important for Hall plasma discharges supported by the electron current due to the E × B drift. Most of the previous studies of this mode were based on the local approximation. Here, we consider the nonlocal model which takes into account the electron inertia as well as the effects of the entire profiles of plasma parameters such as the electric, magnetic fields, and plasma density. Contrary to local models, nonlocal analysis predicts multiple unstable modes, which exist in the regions, where local instability criteria are not satisfied. This is especially pronounced for the long wavelength modes which provide larger contribution to the anomalous transport.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 01, 2016
- Source ID
- 10.1063/1.4971816
Entities
People
- A. I. Smolyakov
- Igor Kaganovich
- Ivan Romadanov
- Sergei V. Ryzhkov
- Tang Tian
- Yevgeny Raitses
Organizations
- Air Force Office of Scientific Research
- Bauman Moscow State Technical University
- Ministry of Education and Science of the Russian Federation
- Natural Sciences and Engineering Research Council
- Princeton University
- University of Saskatchewan
- University of Science and Technology of China