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Finite orbit width effects on turbulent transport of ion parallel momentum

Yang Li2024年10月Plasma Physics and Controlled FusionIF 2.2出版社

A kinetic model for ion turbulent parallel momentum transport is developed with finite orbit width effects for Tokamak plasmas. It is shown that the curvature and gradient drifts of ions can introduce pressure perturbations into the transport equation of ion parallel momentum, which leads to a new source term. And the source term can be understood as a Coriolis force and can play a key role in the toroidal symmetry breaking during the spontaneous spin-up process.

日本語訳

トカマクプラズマに対する有限軌道幅効果を伴うイオン乱流平行運動量輸送の運動論的モデルが開発される。イオンの曲率ドリフトと勾配ドリフトが、イオン平行運動量の輸送方程式に圧力摂動を導入し得ることが示され、それが新しい源項をもたらす。そして、その源項はコリオリ力として理解でき、自発的スピンアップ過程におけるトロイダル対称性の破れに重要な役割を果たし得る。

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Turbulent transport
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