Soviet Physics Journal

, Volume 33, Issue 9, pp 726–730 | Cite as

Probe measurements in a plasma having an anisotropic electron velocity distribution function

  • A. M. Devyatov
  • M. A. Mal'kov
Plasma Physics


In this paper a number of questions connected with the diagnostics of anisotropic electron velocity distribution functions possessing a drift velocity were examined. In an example involving a model distribution function, the possible errors in measurements of the electron energy distribution function (EEDF) using a cylindrical probe oriented parallel to the particle flow are estimated. It is shown that application of a standard method for treating probe volt-ampere characteristics leads to over- and underestimates relative to the true values of the measured temperatures T e + and T e , found respectively according to the currents i+(V) and i(V) on a flat probe, oriented along and against a specific direction. A comparison of calculated T e + +/T e ratios is made with experimental data.


Experimental Data Distribution Function Standard Method Probe Measurement Model Distribution 
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Copyright information

© Plenum Publishing Corporation 1991

Authors and Affiliations

  • A. M. Devyatov
    • 1
  • M. A. Mal'kov
    • 1
  1. 1.N. P. Ogarev Mordovian State UniversitySaranskMordovian SSR

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