Theoretical framework for strongly magnetized plasmas
Gyrokinetics is a theoretical framework to study plasma behavior on perpendicular spatial scales comparable to the gyroradius and frequencies much lower than the particle cyclotron frequencies.[1]
These particular scales have been experimentally shown to be appropriate for modeling plasma turbulence.[2] The trajectory of charged particles in a magnetic field is a helix that winds around the field line. This trajectory can be decomposed into a relatively slow motion of the guiding center along the field line and a fast circular motion, called gyromotion. For most plasma behavior, this gyromotion is irrelevant. Averaging over this gyromotion reduces the equations to six dimensions (3 spatial, 2 velocity, and time) rather than the seven (3 spatial, 3 velocity, and time). Because of this simplification, gyrokinetics governs the evolution of charged rings with a guiding center position, instead of gyrating charged particles.
^X. Garbet, M. Lesur. Gyrokinetics. hal-03974985, 2023.
^G.R. McKee, C.C. Petty, et al. Non-dimensional scaling of turbulence characteristics and turbulent diffusivity. Nuclear Fusion, 41(9):1235, 2001.
Gyrokinetics is a theoretical framework to study plasma behavior on perpendicular spatial scales comparable to the gyroradius and frequencies much lower...
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_{g}={\frac {|q|B}{m}}.} Beam rigidity Cyclotron Magnetosphere particle motion Gyrokinetics Chen, Francis F. (1983). Introduction to Plasma Physics and Controlled...
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