Kinetic study of ion-acoustic plasma vortices

Journal Article · Mon Sep 15 00:00:00 EDT 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4895508· OSTI ID:22303619

Khan, S. A. ^[1]; Aman-ur-Rehman, ^[2]; Mendonca, J. T. ^[3]

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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 Téchnico, Av. Rovisco Pais 1, 1049-001 Lisboa (Portugal)

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.

• OSTI ID: 22303619
• Journal Information: Physics of Plasmas, Vol. 21, Issue 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

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