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Experimental tests of paleoclassical transport

J.D. Callen, J.K. Anderson, T.C. Arlen, G. Bateman, R.V. Budny, T. Fujita, C.M. Greenfield, M. Greenwald, R.J. Groebner, D.N. Hill2007年被引用 9Nuclear FusionIF 3出版社

Predictions of the recently developed paleoclassical transport model are compared with data from many toroidal plasma experiments: electron heat diffusivity in DIII-D, C-Mod and NSTX ohmic and near-ohmic plasmas; transport modelling of DIII-D ohmic-level discharges and of the RTP ECH 'stair-step' experiments with electron internal transport barriers (eITBs) at low order rational surfaces; investigation of a strong eITB in JT-60U; H-mode Te edge pedestal properties in DIII-D; and electron heat diffusivities in non-tokamak experiments (NSTX/ST, MST/RFP, SSPX/spheromak). The radial electron heat transport predicted by the paleoclassical model is found to be in reasonable agreement with a wide variety of ohmic-level experimental results and to set the lower limit (within a factor ≲2 in tokamaks) on the radial electron heat transport in most resistive, current-carrying toroidal plasmas—for where it is expected to be dominant over fluctuation-induced anomalous transport that scales with a gyro-Bohm diffusion coefficient.

日本語訳

最近開発された古古典輸送モデルの予測を、多くのトーラス状プラズマ実験のデータと比較した:DIII-D、C-Mod、NSTXにおけるオーミックおよび準オーミックプラズマの電子熱拡散係数;DIII-Dのオーミックレベル放電およびRTPのECH「階段状」実験の輸送モデリング(低次有理面における電子内部輸送障壁(eITB));JT-60Uにおける強いeITBの調査;HモードにおけるDIII-DのTeペデスタル特性;および非トカマク実験(NSTX/ST、MST/RFP、SSPX/スフェロマック)における電子熱拡散係数。古古典モデルによって予測される動径方向の電子熱輸送は、多種多様なオーミックレベルの実験結果と合理的に一致し、ほとんどの抵抗性・電流担持トーラス状プラズマにおける動径方向の電子熱輸送の下限(トカマクでは係数≲2以内)を設定することがわかった——ここで、ジャイロボーム拡散係数にスケールするゆらぎ誘起異常輸送よりも支配的であると期待される領域においてである。

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diii-d低精度(概要文一致)nstx-u低精度(概要文一致)
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