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Title: Kinetic study of ion-acoustic plasma vortices

The kinetic theory of electron plasma waves with finite orbital angular momentum has recently been introduced by Mendonca. This model shows possibility of new kind of plasma waves and instabilities. We have extended the theory to ion-acoustic plasma vortices carrying orbital angular momentum. The dispersion equation is derived under paraxial approximation which exhibits a kind of linear vortices and their Landau damping. The numerical solutions are obtained and compared with analytical results which are in good agreement. The physical interpretation of the ion-acoustic plasma vortices and their Landau resonance conditions are given for typical case of Maxwellian plasmas.
Authors:
 [1] ;  [2] ;  [3]
  1. National Centre for Physics (NCP), Quaid-i-Azam University Campus, Islamabad 45320 (Pakistan)
  2. Pakistan Institute of Engineering and Applied Sciences (PIEAS), P.O. Nilore, Islamabad 45650 (Pakistan)
  3. IPFN, Instituto Superior T├ęchnico, Av. Rovisco Pais 1, 1049-001 Lisboa (Portugal)
Publication Date:
OSTI Identifier:
22303619
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; APPROXIMATIONS; COMPARATIVE EVALUATIONS; ELECTRON PLASMA WAVES; EQUATIONS; INSTABILITY; LANDAU DAMPING; NUMERICAL SOLUTION; ORBITAL ANGULAR MOMENTUM; RESONANCE; VORTICES