Open AccessThe determination of low energy electron-molecule cross sections via swarm analysis
Author(s) -
Saša Dujko,
Ronald D. White,
Zoran Petrović
Publication year - 2008
Publication title -
facta universitatis - series physics chemistry and technology
Language(s) - English
Resource type - Journals
eISSN - 2406-0879
pISSN - 0354-4656
DOI - 10.2298/fupct0801057d
Subject(s) - boltzmann equation , monte carlo method , legendre polynomials , physics , boltzmann constant , electron , swarm behaviour , statistical physics , magnetic field , direct simulation monte carlo , computational physics , convection–diffusion equation , dynamic monte carlo method , mathematics , quantum mechanics , mathematical optimization , mechanics , statistics
In this paper we discuss the swarm physics based techniques including the Boltzmann equation analysis and Monte Carlo simulation technique for determination of low energy electron-molecule cross sections. A multi term theory for solving the Boltzmann equation and Monte Carlo simulation code have been developed and used to investigate some critical aspects of electron transport in neutral gases under the varying configurations of electric and magnetic fields when non-conservative collisions are operative. These aspects include the validity of the two term approximation and the Legendre polynomial expansion procedure for solving the Boltzmann equation, treatment of non-conservative collisions, the effects of a magnetic field on the electron transport and nature and difference between transport data obtained under various experimental arrangements. It was found that these issues must be carefully considered before unfolding the cross sections from swarms transport data
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