Work

Nondiffusive transport of inertial heavy impurities in drift-wave turbulence

Year: 2025

Type: article

Abstract: We investigate the transport behavior of tungsten impurities with finite inertia in drift-wave turbulence using the Hasegawa-Wakatani model. Unlike previous tracer-based models, our simulations reveal a transition to nondiffusive dynamics for a range of charge states. This mechanism offers a turbulence-driven route to core impurity accumulation. This finding underscores the nontrivial role of particle inertia in impurity dynamics and has strong implications for impurity control in future fusion devices such as ITER.

Source: Physical review. E

DOI: 10.1103/4px7-2vtt

Authors: Zetao Lin, Benjamin Kadoch, Sadruddin Benkadda, Kai Schneider

Institutions: Aix-Marseille Université, Centre National de la Recherche Scientifique, Institut Universitaire des Systèmes Thermiques Industriels, Institut de Mécanique et d'Ingénierie de Bordeaux, Institut de Mathématiques de Marseille

Language: English

Topic: Magnetic confinement fusion research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Agence Nationale de la Recherche, Euratom Research and Training Programme

Awards: Adaptive Characteristic Mapping Method for the Euler Equations, G858011915