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Particle transport analysis in lower hybrid current drive discharges of JT-60U

K Nagashima, S Ide, O Naito1996年Plasma Physics and Controlled FusionIF 2.2出版社

Particle transport is modified in lower hybrid current drive discharges of JT-60U. The density profile becomes broad during the lower hybrid wave injection and the profile change depends on the injected wave spectrum. Particle transport coefficients (diffusion coefficient and profile peaking factor) were evaluated using gas-puff modulation experiments. The diffusion coefficient in the current drive discharges is about three times larger than that in the ohmic discharges. The profile peaking factor decreases in the current drive discharges and the evaluated values are consistent with the measured density profiles.

日本語訳

粒子輸送は、JT-60Uの低ハイブリッド電流駆動放電において変更される。密度分布は、低ハイブリッド波の注入中にブロード化し、その分布の変化は、注入された波のスペクトルに依存する。粒子輸送係数(拡散係数および分布ピーキング係数)は、ガスパフ変調実験を用いて評価された。電流駆動放電における拡散係数は、オーミック放電におけるそれの約3倍である。分布ピーキング係数は、電流駆動放電において減少し、評価された値は、測定された密度分布と一致する。

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Current driveLower hybridJT-60ULower hybrid current driveParticle transport
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