Determination of electron temperature and electron density in laboratory plasmas using the double probe method

  • M Gasseller Bindura University of Science Education, P. Bag 1020 Bindura, Zimbabwe
  • AV Gholap National University of Science and Technology, Bulawayo, Zimbabwe

Abstract

The electron temperatures and electron densities of air and argon have been measured at various pds (pressure times distance). The electron temperatures have been computed using the Johnson-Malter double-probe method. The electron densities have been computed using the total positive ion current and the cross-sectional area of the probes. It is seen that the electron temperature increases from 5.8 × 102 oK to 7.83 × 104 oK as the pd is reduced from 130mm Hg × mm to 60 mm Hg × mm for argon. The electron densities increases from 2.8 × 1011/cm3 to 3.2 × 1011 /cm3 for the same variation of pds. For air the electron temperature increases from 3.6 × 104 oK to 7.80 × 104 oK as the pd is reduced from 130 mm Hg × mm to 60 mm Hg × mm. The electron density increases from 4.4 × 1011 /cm3 to 6.3 × 1011 /cm3 for the same variation of pd.

African Journal of Educational Studies in Mathematics and Sciences Vol. 1, 2001: 1-11
Published
2006-11-24
Section
Articles

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print ISSN: 2508-1128