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Search for ion temperature gradient driven electrostatic hydrodynamic instability in tokamaks

A. Hirose, O. Ishihara1987年被引用 10Nuclear FusionIF 3出版社

The ion temperature gradient driven electrostatic instability in tokamak magnetic geometry has been investigated numerically in terms of a generalized ion density moment. For typical tokamak parameters (ratio between the density gradient scale length and the major radius, n = Ln/R, about 0 (0.1) and Ti≅Te) the search for rapidly growing instabilities of a hydrodynamic nature has been unsuccessful, even with the ion temperature gradient relative to the density gradient, ηi = d(ln Ti)/d(ln n0), as large as six.

日本語訳

トカマク磁気幾何学におけるイオン温度勾配駆動の静電不安定性を、一般化されたイオン密度モーメントの観点から数値的に調査した。典型的なトカマクパラメータ(密度勾配スケール長と主半径の比、n = Ln/R、約0.1、およびTi≅Te)に対して、流体力学的不安定性の急速な成長を探索したが、イオン温度勾配と密度勾配の比ηi = d(ln Ti)/d(ln n0)が6程度と大きい場合でも、そのような不安定性は見いだされなかった。

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