Nonmonotonic spatial profiles of excitation rates in bounded plasmas caused by effects of EDF nonlocality

Author

Bogdanov, Evgeny A. ; Kudryavtsev, Anatoly A. ; Tsendin, Lev D.

Author_Institution

Vavilov (S.I.) State Opt. Inst., St. Petersburg

Volume

34

Issue

3

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

834

Lastpage

843

Abstract

It is shown that the impact of the electron distribution function (EDF) nonlocality on the spatial profiles of excitation rates is important up to high gas pressures pR<100 cmtorr. A paradoxical effect related to the nonlocal character of the EDF is revealed: the peaks of the profiles of the excitation rates shift from the discharge axis toward the periphery as the pressure increases. This effect cannot be understood from the hydrodynamic point-of-view but is instead related to the nonlocal character of the EDF

Keywords

glow discharges; plasma boundary layers; plasma collision processes; plasma transport processes; bounded plasmas; electron distribution function nonlocality; excitation rates; glow discharge; hydrodynamics; nonmonotonic spatial profiles; Distribution functions; Electrons; Equations; Hydrodynamics; Kinetic theory; Nonuniform electric fields; Plasma density; Plasma simulation; Plasma temperature; Resistance heating; Electron distribution function (EDF); nonlocal electron kinetics; positive column of glow direct current (dc) discharge;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2006.875312

Filename

1643310