Reproducing anomalous transport coefficients from electro-static tokamak edge turbulent dynamics
Abstract
Turbulent transport near the X-point of a large tokamak is examined using local, gradient-driven simulations that determine the saturated plasma profiles. The distribution of a representative set of particle tracers evolving within these profiles is then analyzed. The study demonstrates that the resulting transport is diffusive, characterized by a coefficient that depends on the spectral properties of the turbulent energy and attains anomalous high values under broad conditions. These findings suggest that anomalous transport is an inherent outcome of the fundamental non-linear drift dynamics of plasmas. The scaling of transport with turbulent energy is also addressed, with implications for future progress toward a mean-field framework for turbulent transport.
Cite
@article{arxiv.2603.05003,
title = {Reproducing anomalous transport coefficients from electro-static tokamak edge turbulent dynamics},
author = {Fabio Moretti and Francesco Cianfrani and Nakia Carlevaro and Giovanni Montani},
journal= {arXiv preprint arXiv:2603.05003},
year = {2026}
}