Theoretical analysis of the electron energy distribution functions in a weakly ionised gas under a relatively high E/N

Abstract

The theoretical analysis of the energy distribution function of electrons in weakly ionised gases is developed in a relatively high E/N by using the three-term approximation of the distribution function in the Boltzmann equation. The continuity equation of the electron swarm with an anisotropic distribution function is also derived. The present analysis is applied to the steady-state electron swarm in neon: the energy distribution functions and the swarm parameters are computed numerically over a range of E/N from 141.3 to 1130 Td. Also the distribution functions are solved from the usual two-term Lorentz approximation. The range of the validity of the Lorentz approximation is investigated by the comparison between both results.

Variations in electron transport in argon with temperature near the Ramsauer-Townsend minimum

“…The theoretical treatment is essentially the same as that developed and described in detail by us (Makabe and Mori 1980), except for the consideration of molecular motion 0022-3727/82/081395 + 08 $02.00 @ 1982 The Institute of Physics (Braglia and Caraffini 1974) under the condition of electron conservation. Therefore we only discuss the electron transport theory briefly.…”

Effective Bonding Parameters for the Prediction of Electronic Transition of CdS Clusters

“…The theoretical treatment is essentially the same as that developed and described in detail by us (Makabe and Mori 1980), except for the consideration of molecular motion (Braglia and Caraffini 1974) under the condition of electron conservation. Therefore we only discuss the electron transport theory briefly.…”

“…Here, the homogeneous partsf;(&) are given as the solution of the following differential equations in matrix form (Makabe and Mori 1980), considering the molecular motion (Braglia and Caraffini 1974).…”

“…In this paper we have analysed the swarm parameters of electrons in argon in the region of the Ramsauer-Townsend minimum over a range of EIN from 1 X to 1 X lO"'V cm* at gas temperatures of 89.6,293 and 1000 K, and discussed the influence of the minimum on electron transport, particularly the drift velocity, using the recently developed method of a three-term expansion of the Boltzmann equation (Makabe and Mori 1980).…”

Anisotropic Velocity Distribution Representation of the Electron Swarm in a Weakly Ionized Gas

“…Recently, we tried to investigate the anisotropic distribution by using the three-term approximation (3).…”