Energetic particle transport: diffusion vs convection and phase-space barriers
Plasma Physics
2022-11-17 v1
Abstract
Energetic particle redistribution in the presence of multiple Alfv\'en eigenmodes is analyzed in [PPCF 58, 014019 (2016)] for the ITER 15MA baseline scenario: non-linear hybrid simulations (within their well known limits) point out that transport can be dominated by avalanches under certain conditions. These phenomena are properly reproduced by the 1D reduced description of [PPCF 64, 035010 (2022)]. Here, using this simplified 1D model, we define the transport character (convective/diffusive) of self-consistent energetic particle redistribution. Transport barriers in phase space are studied using the Lagrangian Coherent Structures technique.
Keywords
Cite
@article{arxiv.2211.08836,
title = {Energetic particle transport: diffusion vs convection and phase-space barriers},
author = {Nakia Carlevaro and Giovanni Montani and Matteo Valerio Falessi and Philipp Lauber},
journal= {arXiv preprint arXiv:2211.08836},
year = {2022}
}
Comments
4 pages, 3 figures