Ion diffusion and acceleration in plasma turbulence.
Pecora F., Servidio S., Greco A., Matthaeus W.H., Burgess D., Haynes C.T., Carbone V., Veltri P.
II - Fisica della materia
Aula 32B-2 - Mercoledì 19 h 09:00 - 13:00
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Particle diffusion, acceleration and energisation are topics of major importance for both space and laboratory plasmas. To study this phenomena we performed two-dimensional (2D) hybrid-PIC simulations with different plasma betas, in order to span different plasma scenarios. Adapting the 3D Nonlinear Guiding Center (NLGC) theory to the 2D case, we investigated the causes of particles acceleration and energisation. We found the electric field has a relevant role when particles are trapped by magnetic vortices.