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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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Title: Electron acceleration in gas by impulse electric field and its application to selective promotion of an electron–molecule reaction
Authors: Sugawara, Hirotake1 Browse this author →KAKEN DB
Sakai, Yosuke Browse this author
Authors(alt): 菅原, 広剛1
Issue Date: 21-Aug-2003
Publisher: Institute of Physics
Citation: Journal of Physics D: Applied Physics, 36(16), 2003, p.1994-2000
Journal Title: Journal of Physics D: Applied Physics
Volume: 36
Issue: 16
Start Page: 1994
End Page: 2000
Publisher DOI: 10.1088/0022-3727/36/16/311
Abstract: 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: http://www.iop.org/EJ/journal/0022-3727/1
Type: article (author version)
URI: http://hdl.handle.net/2115/766
Appears in Collections:情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 菅原 広剛

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