High frequency non-gyrokinetic turbulence at tokamak edge parameter
Mario Raeth, Klaus Hallatschek
TL;DR
This paper presents pioneering 6D-Vlasov simulations revealing that high-frequency ion Bernstein wave turbulence at tokamak edges causes transport comparable to gyrokinetic turbulence, challenging traditional approximations.
Contribution
It introduces the first 6D-Vlasov simulations of high-frequency turbulence at tokamak edges, demonstrating the significance of non-gyrokinetic effects.
Findings
Transport levels similar to gyrokinetic turbulence
High-frequency turbulence can be significant in tokamak edges
Challenges the assumption that gyrokinetic approximation is sufficient
Abstract
First of a kind 6D-Vlasov computer simulations of high frequency ion Bernstein wave turbulence for parameters relevant to the tokamak edge show transport comparable to sub-Larmor-frequency gyrokinetic turbulence. The customary restriction of magnetized plasma turbulence studies to the gyrokinetic approximation may not be based on physics but only a practical constraint due to computational cost.
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Taxonomy
TopicsMagnetic confinement fusion research · Ionosphere and magnetosphere dynamics · Solar and Space Plasma Dynamics