Cross-field plasma acceleration and potential formation induced by nonlinear Landau damping of electrostatic waves in a relativistic magnetized plasma

2003 ◽  
Vol 10 (10) ◽  
pp. 3939-3948 ◽  
Author(s):  
R. Sugaya
Keyword(s):  
Magnetized Plasma ◽  
Landau Damping ◽  
Plasma Acceleration ◽  
Electrostatic Waves ◽  
Potential Formation ◽  
Nonlinear Landau Damping

Electron Heating and Energy Transport Due to Nonlinear Landau Damping of Electrostatic Waves in an Electron Beam-Plasma System

1995 ◽  
Vol 64 (6) ◽  
pp. 2018-2035 ◽  
Author(s):  
Reiji Sugaya ◽  
Hideyuki Tachibana ◽  
Hirobumi Yamashita ◽  
Kouji Miyake ◽  
Akihiro Ue ◽  
...  
Keyword(s):  
Electron Beam ◽  
Energy Transport ◽  
Landau Damping ◽  
Plasma System ◽  
Electron Heating ◽  
Electrostatic Waves ◽  
Beam Plasma ◽  
Nonlinear Landau Damping ◽  
Electron Beam Plasma

Numerical study of self-interaction of Bernstein waves by nonlinear Landau damping

1992 ◽  
Vol 48 (3) ◽  
pp. 465-476
Author(s):  
Masao Sugawa
Keyword(s):  
Numerical Study ◽  
Magnetized Plasma ◽  
Wave Frequency ◽  
Landau Damping ◽  
Frequency Range ◽  
Electron Heating ◽  
Dominant Mechanism ◽  
Bernstein Waves ◽  
Nonlinear Landau Damping ◽  
Bulk Plasma

When Bernstein waves (B waves) are excited in a magnetized plasma, their self-interaction by nonlinear Landau damping (NLD) becomes the dominant mechanism for the electron heating of the bulk plasma. We examine this behaviour numerically. This occurs only for B waves with relatively small k∥ because the damping of the B waves becomes very small. This occurs in the relatively broad B-wave frequency range betweenω/ωc = 1.45 and 1.78. For B waves with large k∥ (k∥R > 0.15), virtual waves are not generated via self-interaction due to NLD because the quasi-linear cyclotron damping of the B waves becomes the dominant mechanism. The numerical results agree well with experimental ones.

Cross-field plasma acceleration and potential formation induced by electrostatic waves in a relativistic magnetized plasma

2000 ◽  
Vol 64 (2) ◽  
pp. 109-124 ◽  
Author(s):  
R. SUGAYA
Keyword(s):  
Magnetic Field ◽  
Particle Acceleration ◽  
Electric Field ◽  
Transport Equations ◽  
Magnetized Plasma ◽  
Moving Frame ◽  
Electrostatic Waves ◽  
Particle Drift ◽  
Potential Formation ◽  
Dynamo Effect

Relativistic and non-relativistic particle acceleration along and across a magnetic field, and the generation of an electric field transverse to the magnetic field, both induced by almost perpendicularly propagating electrostatic waves in a relativistic magnetized plasma, are investigated theoretically on the basis of relativistic quasilinear transport equations. The electrostatic waves accelerate particles via Landau or cyclotron damping, and the ratio of parallel and perpendicular drift velocities vs||/vd can be proved to be proportional to k||/k⊥. Simultaneously, an intense cross-field electric field E0 = B0 × vd/c is generated via the dynamo effect owing to perpendicular particle drift to satisfy the generalized Ohm's law, which means that this cross-field particle drift is identical to E × B drift. The relativistic quasilinear transport equations for relativistic cross-field particle acceleration are derived by Lorentz transformation of the relativistic quasilinear momentum-space diffusion equation in the moving frame of reference without the electric field and the cross-field particle drift. They can be applied to the investigation of the relativistic perpendicular particle acceleration that may possibly occur in space plasmas.

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