skip to main content

Title: Electron temperature gradient mode instability and stationary vortices with elliptic and circular boundary conditions in non-Maxwellian plasmas

Linear and nonlinear dynamics of electron temperature gradient mode along with parallel electron dynamics is investigated by considering hydrodynamic electrons and non-Maxwellian ions. It is noticed that the growth rate of η{sub e}-mode driven linear instability decreases by increasing the value of spectral index and increases by reducing the ion/electron temperature ratio along the magnetic field lines. The eigen mode dispersion relation is also found in the ballooning mode limit. Stationary solutions in the form of dipolar vortices are obtained for both circular and elliptic boundary conditions. It is shown that the dynamics of both circular and elliptic vortices changes with the inclusion of inhomogeneity and non-Maxwellian effects.
Authors:
 [1] ;  [2] ;  [3] ;  [2]
  1. Theoretical Physics Division, PINSTECH, P.O. Nilore, Islamabad (Pakistan)
  2. Department of Physics, University of Peshawar, Khyber Pakhtun Khwa 25000 (Pakistan)
  3. (Pakistan)
Publication Date:
OSTI Identifier:
22489911
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 12; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BALLOONING INSTABILITY; BOUNDARY CONDITIONS; DISPERSION RELATIONS; ELECTRON TEMPERATURE; MAGNETIC FIELDS; MATHEMATICAL SOLUTIONS; NONLINEAR PROBLEMS; PLASMA; TEMPERATURE GRADIENTS; VORTICES