Recent Advances in Understanding the Diffuse Auroral Precipitation: The Role of Resonant Wave-Particle Interactions

Author(s):  
Binbin Ni ◽  
Richard M. Thorne
1991 ◽  
Vol 116 (2) ◽  
pp. 1171-1210 ◽  
Author(s):  
Bruce T. Tsurutani

AbstractThis review will discuss various plasma waves and instabilities that have been observed near comets. Comments on nonlinear wave evolution and wave cascading, as well as the role of nonlinear waves in wave-particle interactions, will be made.


2016 ◽  
Vol 23 (4) ◽  
pp. 042101 ◽  
Author(s):  
A. K. Tripathi ◽  
R. P. Singhal ◽  
G. V. Khazanov ◽  
L. A. Avanov

2021 ◽  
Vol 87 (6) ◽  
Author(s):  
Peter J. Catto ◽  
Elizabeth A. Tolman

A general procedure for understanding plasma behaviour when resonant wave–particle interactions are the sole destabilizing and transport mechanism or only heating and/or current drive source is highlighted without recourse to involved numerical or analytical treatments. These phenomena are characterized by transport that appears to be collisionless even though collisions play a central role in narrow collisional boundary layers. The order of magnitude estimates, which include nonlinear effects, are shown to provide expressions in agreement with the principal results of recent toroidal Alfvén eigenmode (TAE), toroidal magnetic field ripple, and heating and current drive treatments. More importantly, the retention of nonlinearities leads to new estimates of the alpha particle energy diffusivity at saturation for TAE modes, and the ripple threshold at which superbanana plateau evaluations of alpha particle transport are modified by nonlinear radial drift effects. In addition, the estimates indicate when quasilinear descriptions for heating and current drive will begin to fail. The phenomenological procedure demonstrates that in magnetic fusion relevant plasmas, narrow collisional boundary layers must be retained for resonant wave–particle interactions as they enhance the role of collisions, and make stochastic particle motion unlikely to be more important than other nonlinear processes.


2010 ◽  
Author(s):  
Lorenzo Matteini ◽  
Simone Landi ◽  
Marco Velli ◽  
Petr Hellinger ◽  
M. Maksimovic ◽  
...  

2012 ◽  
Vol 19 (8) ◽  
pp. 082902 ◽  
Author(s):  
C. S. Wu ◽  
C. B. Wang ◽  
D. J. Wu ◽  
K. H. Lee

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