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Modelling the behaviour of a Hall current plasma accelerator

J Ashkenazy, A Fruchtman, Y Raitses, N J Fisch1999年Plasma Physics and Controlled FusionIF 2.2出版社

A simple model for the operation of the Hall current plasma accelerator, a crossed field discharge device that accelerates a flow of quasi-neutral plasma, is used to calculate the performance of an actual device at various configurations and operating conditions. The solutions demonstrate that the performance, characterized by the ionized fraction of the flow, the mass-averaged exit flow velocity and the total efficiency, improves as the flow rate or the accelerator length are increased at a given discharge voltage, trends that were also observed experimentally. Nevertheless, the calculated values for the longer lengths, especially the total efficiencies, are significantly higher than the measured ones, indicating the importance of an accurate solution of the electron energy equation and the need to include in the model plasma-wall interactions.

日本語訳

ホール電流プラズマ加速器(交差電磁界放電装置であり、準中性プラズマの流れを加速する)の動作のための単純なモデルを用いて、様々な構成および運転条件における実機の性能を計算する。その解は、性能(流れの電離割合、質量平均出口流速、および総合効率によって特徴づけられる)が、所定の放電電圧において流量または加速器長が増加するにつれて向上することを示しており、これらの傾向は実験的にも観察された。それにもかかわらず、より長い長さに対する計算値、特に総合効率は、測定値よりも有意に高く、電子エネルギー方程式の正確な解法の重要性と、モデルにプラズマ-壁相互作用を含める必要性を示している。

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