DIFFER
DIFFER Publication

Overview of multiscale turbulence studies covering ion-to-electron scales in magnetically confined fusion plasma

Label Value
Author
Abstract

Turbulent transport in magnetically confined fusion plasma has conventionally been analyzed at the ion gyroradius scale based on the microturbulence theory. However, ion-scale turbulence analysis sometimes fails to predict the turbulent transport flux observed experimentally. Microturbulence at the electron gyroradius scale and cross-scale interactions between disparate-scale turbulences are possible mechanisms to resolve this issue. This overview discusses the recent progress in multiscale turbulence studies and presents future perspectives from recent experimental, theoretical, and numerical investigations. The following aspects are highlighted: (1) the importance of electron-scale effects in experiments, (2) the physical mechanisms of cross-scale interactions, (3) modeling electron-scale effects in quasilinear transport models, and (4) the impacts of cross-scale interactions on burning plasmas. Understanding multiscale turbulence is necessary to improve performance prediction and explore optimal operations for future burning plasmas.

Year of Publication
2024
Journal
Nuclear Fusion
Volume
64
Issue
11
Number of Pages
112007
Publisher
IOP Publishing
DOI
PId
ff0fc99d2ae67606c913c1ca6619624e
Alternate Journal
Nucl. Fusion
Label
OA
Journal Article
Download citation