Pecora, F. (2019) Ion transport and heating in simulations of plasma turbulence. Il nuovo cimento C, 42 (5). pp. 1-9. ISSN 1826-9885
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Abstract
The processes of particle diffusion and acceleration are currently being tackled worldwide because of their major implications in astrophysical and laboratory plasma physics. Despite the efforts of the whole community, a comprehensive theoretical description of such phenomena is still missing. In this work, a two-dimensional (2D) version of the Non-Linear Guiding Center (NLGC) theory is derived, in order to describe particle transport in some particular scenarios. The theory is validated with 2.5D kinetic simulations of plasma turbulence. Simulations parameters are chosen so that several scenarios can be described, going from the solar corona to the solar wind and the magnetosheath. Finally, the role of turbulence coherent structures on particle acceleration and energization is investigated. Current sheets are found to be of major importance in this scenario and that there is a scale-resonance interaction between the current sheet size and the particles’ Larmor radii.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 29 Jan 2021 11:19 |
| Last Modified: | 29 Jan 2021 11:19 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/20668 |
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