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Hypervelocity dust impacts in FTU scrape-off layer

S. Ratynskaia, C. Castaldo, K. Rypdal, G. Morfill, U. de Angelis, V. Pericoli-Ridolfini, A. Rufoloni, E. Giovannozzi2008年被引用 38Nuclear FusionIF 3出版社

The first evidence of dust-impact ionization processes in the scrape-off layer of the Frascati tokamak upgrade (FTU) was reported in Nucl. Fusion47 L5 (2007). In this work an extended data analysis (both of electrostatic probe signals and probe surface analysis) is presented, using results of empirical studies of hypervelocity impacts. Within the accuracy and limits of application of such results to tokamak plasma environment, the data are shown to be consistent with occurrence of impacts by micrometre size iron particles at velocities of the order of 10 km s−1.

日本語訳

フラスカティ・トカマク・アップグレード(FTU)のスクレイプオフ層におけるダスト衝突電離過程の最初の証拠が、Nucl. Fusion 47 L5(2007)に報告された。本論文では、静電プローブ信号とプローブ表面分析の両方を用いた拡張データ解析を提示し、超高速衝突の経験的研究の結果を用いている。トカマクプラズマ環境へのこれらの結果の適用限界と精度の範囲内で、データは、マイクロメートルサイズの鉄粒子が約10 km s⁻¹の速度で衝突したことと整合的である。

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