Boltzmann equation studies on electron swarm parameters for oxygen plasma by using electron collision cross – sections

• Main Authors: Mohammad M. Othman, sherzad aziz taha, Saeed Rasool Hussein
• Format: Article
• Language: English
• Published: Salahaddin University-Erbil 2020-10-01
• Series: Zanco Journal of Pure and Applied Sciences
• Subjects: boltzmann equation; electron energy distribution function (eedf); electron transport parameters; critical field strength; electric discharge.
• Online Access: https://zancojournals.su.edu.krd/index.php/JPAS/article/view/3359

The Boltzmann transport equation has been solved using a two-term approximation method in pure electronegative gas oxygen to evaluate the electron energy distribution function (EEDF) and electron transport parameters for a wide range of E/N varying from 0.1 to 1000 Td (1 Td=10-17 V.cm2). These parameters, are “electron drift velocity, mean electron energy, characteristic energy, diffusion coefficients, electron mobility, attachment and ionization coefficients, effective ionization coefficient and critical reduced electric field strength (E/N)crt”..The dependence of second kind collision (super-elastic collision) and electron energy distribution function on E/N are explained (where E is electric field and N is neutral number density). The present calculated results are in good agreements as compared, with the previous experimental and theoretical results. A group of electron/molecule collision (elastic and inelastic) cross-sections are collected for oxygen gas to evaluate transport parameters over the entire E/N range. In addition, the energy lost by different types of electron/molecule collision processes are computed as a function of E/N.