Equality of Higher-Order Diffusion Coefficients between Component and Composite Electron Swarms in Gas
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概要
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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.
- Japan Society of Applied Physicsの論文
- 2006-06-15
著者
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Sugawara Hirotake
Division Of Electronics For Informatics Graduate School Of Information Science And Technology Hokkai
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Sakai Yosuke
Division Of Electronics For Informatics Graduate School Of Information Science And Technology Hokkai
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Sugawara Hirotake
Division of Electronics for Informatics, Graduate School of Information Science and Technology, Hokkaido University, North 14 West 9, Sapporo 060-0814, Japan
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Sakai Yosuke
Division of Electronics for Informatics, Graduate School of Information Science and Technology, Hokkaido University, North 14 West 9, Sapporo 060-0814, Japan
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Sakai Yosuke
Division of Electronics and Information Engineering, Hokkaido University, North 13 West 8, Sapporo 060-8628, Japan
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