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Electron acceleration in gas by impulse electric field and its application to selective promotion of an electron–molecule reaction

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タイトル: Electron acceleration in gas by impulse electric field and its application to selective promotion of an electron–molecule reaction
著者: Sugawara, Hirotake 著作を一覧する
Sakai, Yosuke 著作を一覧する
発行日: 2003年 8月21日
出版者: Institute of Physics
引用: Journal of Physics D: Applied Physics, 36(16), 2003, p.1994-2000
誌名: Journal of Physics D: Applied Physics
巻: 36
号: 16
開始ページ: 1994
終了ページ: 2000
出版社 DOI: 10.1088/0022-3727/36/16/311
抄録: We have simulated electron acceleration under short intense impulse electric fields of 0.1–1 kV cm-1 strength and ~1 ns duration in N2 at 65.5 Pa. The electron acceleration is completed in a practically collisionless condition when the impulse duration is comparable with or shorter than the electron mean free time. On the basis of this feature, we have proposed a way to produce a group of monoenergetic electrons. The electron energy after acceleration is controllable by the impulse strength and duration, and we have demonstrated selective promotion of the excitation producing N2(A 3Σu+) metastable excited molecules. The selectivity has been quantified as the efficiency of the electron energy utilized for the target reaction, and efficiencies of 20–30% have been achieved in this simulation. These values are higher than those of electron swarms in DC equilibrium, in which the efficiency is at most 10%. The electron behaviour under impulse electric fields and the dependence of the energy efficiency on the impulse profile have been investigated.
Rights: Copyright (c) 2003 IOP Publishing Ltd.
Relation (URI): http://www.iop.org/EJ/journal/0022-3727/1
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/766
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 菅原 広剛

 

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