Ambipolar field role in formation of electron distribution function in gas discharge plasma

Chengxun Yuan; E. A. Bogdanov; A. A. Kudryavtsev; K. M. Rabadanov; Zhongxiang Zhou

doi:10.1038/s41598-017-15073-6

Ambipolar field role in formation of electron distribution function in gas discharge plasma

Chengxun Yuan
, E. A. Bogdanov
, A. A. Kudryavtsev
, K. M. Rabadanov^*
, Zhongxiang Zhou

^*Corresponding author for this work

School of Physics

St. Petersburg State University

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

It is shown that the local approximation for electron distribution function (EDF) determination at plasma periphery, where the ambipolar field is dominant, is not applicable even at high pressures when the characteristic plasma size exceeds the energy relaxation length of the electrons R > λ _ϵ . Therefore, consistent results can be obtained only when solving the complete kinetic equation in both energy and spatial variables (i.e. it is necessary to solve nonlocal kinetic equation).

Original language	English
Article number	14613
Journal	Scientific Reports
Volume	7
Issue number	1
DOIs	https://doi.org/10.1038/s41598-017-15073-6
State	Published - 1 Dec 2017

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title = "Ambipolar field role in formation of electron distribution function in gas discharge plasma",

abstract = "It is shown that the local approximation for electron distribution function (EDF) determination at plasma periphery, where the ambipolar field is dominant, is not applicable even at high pressures when the characteristic plasma size exceeds the energy relaxation length of the electrons R > λ ϵ . Therefore, consistent results can be obtained only when solving the complete kinetic equation in both energy and spatial variables (i.e. it is necessary to solve nonlocal kinetic equation).",

author = "Chengxun Yuan and Bogdanov, \{E. A.\} and Kudryavtsev, \{A. A.\} and Rabadanov, \{K. M.\} and Zhongxiang Zhou",

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AU - Yuan, Chengxun

AU - Bogdanov, E. A.

AU - Kudryavtsev, A. A.

AU - Rabadanov, K. M.

AU - Zhou, Zhongxiang

PY - 2017/12/1

Y1 - 2017/12/1

N2 - It is shown that the local approximation for electron distribution function (EDF) determination at plasma periphery, where the ambipolar field is dominant, is not applicable even at high pressures when the characteristic plasma size exceeds the energy relaxation length of the electrons R > λ ϵ . Therefore, consistent results can be obtained only when solving the complete kinetic equation in both energy and spatial variables (i.e. it is necessary to solve nonlocal kinetic equation).

AB - It is shown that the local approximation for electron distribution function (EDF) determination at plasma periphery, where the ambipolar field is dominant, is not applicable even at high pressures when the characteristic plasma size exceeds the energy relaxation length of the electrons R > λ ϵ . Therefore, consistent results can be obtained only when solving the complete kinetic equation in both energy and spatial variables (i.e. it is necessary to solve nonlocal kinetic equation).

UR - https://www.scopus.com/pages/publications/85032834749

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DO - 10.1038/s41598-017-15073-6

M3 - 文章

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SN - 2045-2322

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Ambipolar field role in formation of electron distribution function in gas discharge plasma

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