Applications Aspects of the Diffusion of Slow Electrons in the Ionospheric Gases | ||
| Baghdad Science Journal | ||
| Article 1, Volume 9, Issue 2, June 2012, Pages 341-351 | ||
| Authors | ||
| a F. Abaas; ; Faisal G. Hamoady; Mohammed I. Esmael; Ibrahim K. Fayyadh | ||
| Abstract | ||
| The paper presents the results of precise of the calculations of the diffusion of slow electrons in ionospheric gases, such as, (Argon – Hydrogen mixture, pure Nitrogen and Argon – Helium – Nitrogen) in the presence of a uniform electric field and temperature 300 Kelvin. Such calculations lead to the value Townsend's energy coefficient (KT) as a function of E/P (electric field strength/gas pressure), electric field (E), electric drift velocity (Vd), momentum transfer collision frequency ( ), energy exchange collision frequency ( ) and characteristic energy (D/). The following physical quantities are deduced as function s E/P: mean free path of the electrons at unit pressure, mean energy lost by an electron per collision, mean velocity of agitation and the collisional cross-section of the molecules. The results are presented graphically and in tabular form. This results appeared a good agreement with the experimental data. | ||
| Keywords | ||
| Boltzmann relation; Maxwell speed distribution; Gas discharge laser | ||
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