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Review of Scientific Instruments / Volume 79 / Issue 10 / NUCLEAR PHYSICS, FUSION AND PLASMAS

Rev. Sci. Instrum. 79, 103501 (2008); http://dx.doi.org/10.1063/1.2976755 (6 pages)

Four free parameter empirical parametrization of glow discharge Langmuir probe data

A. A. Azooz

Department of Physics, College of Science, Mosul University, Mosul–Iraq

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(Received 29 April 2008; accepted 10 August 2008; published online 3 October 2008)

For the purpose of developing a simple empirical model capable of producing the electron energy distribution function (EEDF) from Langmuir probe I-V characteristics, a four parameter empirical equation that fits most Langmuir probe experimental data is suggested. The four free fitting parameters are related to the main plasma properties. These properties include the ion and electron saturation currents and the plasma electron temperature. This equation can be readily differentiated twice to give the EEDF according to the Druyvesteyn formula. Furthermore, a MATLAB platform based computer code based on this model yielding results for the plasma potential and all plasma parameters mentioned above is presented. The information given below can be used to write other computer codes for the same purpose in any other programming language.

© 2008 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. THE MODEL
  3. THE SOFTWARE
  4. EXPERIMENTAL TEST
  5. CONCLUSIONS

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KEYWORDS and PACS

Keywords

glow discharges, Langmuir probes, mathematics computing, physics computing, plasma temperature, plasma transport processes

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2976755

PUBLICATION DATA

ISSN

0034-6748 (print)  
1089-7623 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    D. Desideri and G. Serianni, Rev. Sci. Instrum. 69, 2354 (1998)RSINAK000069000006002354000001.


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