http://arxiv.org/abs/1908.00694
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.
A. Shalchi
Mon, 5 Aug 19
24/53
Comments: Paper was accepted by The Astrophysical Journal Letters on August 1st, 2019