Title :
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
fDate :
6/1/2006 12:00:00 AM
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;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2006.875312
