Perpendicular diffusion of energetic particles in noisy reduced magnetohydrodynamic turbulence
arXiv:1409.2470 · doi:10.1088/0004-637X/794/1/56
Abstract
Recently a model for noisy reduced magnetohydrodynamic turbulence was proposed. The latter model was already used to study the random walk of magnetic field lines. In the current article we use the same model to investigate the diffusion of energetic particles across the mean magnetic field. To compute the perpendicular diffusion coefficient two analytical theories are used, namely the Non- Linear Guiding Center (NLGC) theory and the Unified Non-Linear Transport (UNLT) theory. It is shown that the two theories provide different results for the perpendicular diffusion coefficient. We also perform test-particle simulations for the aforementioned turbulence model. We show that only the UNLT theory describes perpendicular transport accurately confirming that the latter theory is a powerful tool in diffusion theory.
arXiv comment11 pages, 6 figures, accepted by ApJ
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Cited by in corpus (8)
- Perpendicular Diffusion of Energetic Particles in Collisionless Plasmas
- The Influence of Different Turbulence Models on the Diffusion Coefficients of Energetic Particles
- Heuristic Description of Perpendicular Diffusion of Energetic Particles in Astrophysical Plasmas
- Time-Dependent Perpendicular Transport of Energetic Particles in Magnetic Turbulence with Transverse Complexity
- Finite Gyroradius Corrections in the Theory of Perpendicular Diffusion, 1. Suppressed Velocity Diffusion
- The implicit contribution of slab modes to the perpendicular diffusion coefficient of particles interacting with two-component turbulence
- Perpendicular diffusion coefficient of cosmic rays in the presence of weak adiabatic focusing
- Energetic Particle Perpendicular Diffusion: Simulations and Theory in Noisy Reduced Magnetohydrodynamic Turbulence