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arXiv · 1908.00694

Heuristic Description of Perpendicular Diffusion of Energetic Particles in Astrophysical Plasmas

A. Shalchi
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Abstract

A heuristic approach for collisionless perpendicular diffusion of energetic particles is presented. Analytic forms for the corresponding diffusion coefficient are derived. The heuristic approach presented here explains the parameter $a^2$ used in previous theories in order to achieve agreement with simulations and its relation to collisionless Rechester & Rosenbluth diffusion. The obtained results are highly relevant for applications because previously used formulas are altered significantly in certain situations.

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A. Shalchi. 2019-08-02. Heuristic Description of Perpendicular Diffusion of Energetic Particles in Astrophysical Plasmas. https://doi.org/10.3847/2041-8213/ab379d

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