Nondiffusive transport of inertial heavy impurities in drift-wave turbulence.
basic_science · Level V
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- Record sourced from PubMed, PMID 41715800.
- Also identified by DOI 10.1103/4px7-2vtt.
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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.