Equality of Higher-Order Diffusion Coefficients between Component and Composite Electron Swarms in Gas

Sugawara, Hirotake; Sakai, Yosuke

Japanese Journal of Applied Physics, 2006, 45(6a), 5189-5196

Permalink : https://hdl.handle.net/2115/33071

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アクセス権
open access
URI
https://hdl.handle.net/2115/33071
タイトル
Equality of Higher-Order Diffusion Coefficients between Component and Composite Electron Swarms in Gas
著者
e-Rad_Researcher
90241356
著者名
Sugawara, Hirotake
著者名
Sakai, Yosuke
言語
英語
キーワード
electrical discharge
plasma
simulation
transport parameter
electron swarm
diffusion coefficient
drift equilibrium
cumulant
moment
発行日
2006-06-08
出版者
Japan Society of Applied Physics
収録物名
Japanese Journal of Applied Physics
巻(号)
45(6a)
ページ
5189-5196
抄録
When an electron swarm in gas is composed of component electron swarms individually in drift equilibrium, the higher-order diffusion coefficients (HDCs) of the composite electron swarms are equal to those of the component electron swarms. We have derived this equality theoretically and have examined it by numerical simulation. The HDCs are the time derivatives of higher-order cumulants, which are quantities characterizing the shape of a spatial electron distribution. This fact seemingly indicates the dependence of the HDCs of the composite electron swarms on the arrangement of the component electron swarms. However, the equality holds irrespective of the relative positions and electron populations of the component electron swarms. We have given a consistent explanation to these facts. We have also discussed electron swarm development from dispersed or multiple electron sources that may appear in practical experiments.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
権利情報
Copyright © 2006 The Japan Society of Applied Physics
PISSN
0021-4922
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1143/JJAP.45.5189