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The European Physical Journal D

, Volume 54, Issue 2, pp 391–398 | Cite as

Non-Maxwellian electron energy distribution function in He, He/Ar, He/Xe/H2 and He/Xe/D2 low temperature afterglow plasma

  • R. PlasilEmail author
  • I. Korolov
  • T. Kotrik
  • P. Dohnal
  • G. Bano
  • Z. Donko
  • J. Glosik
Topical issue: 23rd Symposium on Plasma Physics and Technology

Abstract

Experimental studies of the electron energy distribution function “EEDF” under well defined conditions in flowing afterglow plasma, using a Langmuir probe are reported. The EEDF is measured in He2 + and Ar+ dominated plasmas and in XeH+ and XeD+ dominated recombining plasmas. He is used as a buffer gas at medium pressures in all experiments (1600 Pa, 250 K). The deviation of the measured EEDF from Maxwellian distribution is shown to depend on plasma composition and on the processes governing the plasma decay. The influence of energetic electrons produced during the plasma decay on the body and tail of the EEDF is observed. The mechanism of energy balance in afterglow plasma is discussed.

PACS

52.20.Fs Electron collisions 52.20.-j Elementary processes in plasmas 52.70.Ds Electric and magnetic measurements 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • R. Plasil
    • 1
    Email author
  • I. Korolov
    • 1
    • 2
  • T. Kotrik
    • 1
  • P. Dohnal
    • 1
  • G. Bano
    • 2
  • Z. Donko
    • 2
  • J. Glosik
    • 1
  1. 1.Department of Surface and Plasma ScienceFaculty of Mathematics and Physics, Charles University in PraguePragueCzech Republic
  2. 2.Research Institute for Solid State Physics and Optics of the Hungarian Academy of SciencesBudapestHungary

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