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Analysis of lithium driven electron density peaking in FTU liquid lithium limiter experiments

G. Szepesi, M. Romanelli, F. Militello, A.G. Peeters, Y. Camenen, F.J. Casson, W.A. Hornsby, A.P. Snodin, D. Wágner, the FTU Team2013年被引用 7Nuclear FusionIF 3出版社

The impact of lithium impurities on the microstability and turbulent transport characteristics in the core of a typical FTU liquid lithium limiter (LLL) (Mazzitelli et al 2011 Nucl. Fusion51 073006) discharge during the density ramp-up phase is studied. A non-linear gyrokinetic analysis performed with GKW (Peeters et al 2009 Comput. Phys. Commun.180 2650) accompanied by a quasi-linear fluid analysis is presented. We show that a centrally peaked, high concentration lithium profile contributes to the electron peaking by reducing the outward electron flux, and that it leads to inward turbulent deuterium transport through ion flux separation.

日本語訳

リチウム不純物が、密度上昇段階における典型的なFTU液体リチウムリミター(LLL)(Mazzitelliら 2011 Nucl. Fusion 51 073004)放電のコア領域における微視的安定性と乱流輸送特性に及ぼす影響を研究した。GKW(Peetersら 2009 Comput. Phys. Commun. 180 2650)を用いた非線形ジャイロ運動論的解析と、それに伴う準線形流体解析を提示する。中心部にピークを持つ高濃度のリチウム分布が、外向きの電子束を低減させることにより電子のピーキングに寄与し、またイオン束の分離を通じて内向きの乱流重水素輸送を引き起こすことを示す。

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LithiumLimiterLiquid lithiumFTU
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