Influence Of Electron-electron Research Articles

Electron energy distribution function in decaying nitrogen plasmas

The electron energy distribution function (EEDF) in decaying nitrogen plasmas is investigated numerically. The comparison of the calculated and experimentally measured EEDF allows a correction to be made to the cross sectional magnitude for electron scattering from vibrationally excited molecules. The influence of electron-electron (e-e) collisions on the EEDF is investigated. It is shown that e-e collisions may have a strong influence on the EEDF in decaying plasmas even at very low degrees of ionization (2*10-6).

Time-dependent Boltzmann equation in a self-sustained discharge XeCl laser: Influence of electron-electron and superelastic collisions

Electron energy distribution functions (EEDF) in a XeCl laser have been obtained by solving the time-dependent Boltzmann equation coupled to the circuit equations, plasmachemistry, and photon kinetics. The results show that in some zones of temporal evolution, EEDF does not instantaneously follow the alteration of electric field. Moreover, electron-electron and superelastic collisions play a non-negligible role in affecting EEDF and related quantities.

The influence of electron-electron and electron-phonon interactions on electron charge orderings in quasi-one-dimensional systems

We consider a model for the description of charge orderings and lattice distortions in quasi-one-dimensional narrow-band systems. The Coulomb interactions and the electron-lattice couplings are included in the model and our attention is focused on the effects of electron-phonon couplings via Coulomb forces. It has been found that these interactions can influence the electronic and lattice subsystems in a different way than the electron-phonon couplings usually considered; e.g. (i) they can contribute to the stabilization of the island-type charge ordering and induce tetramerization of the lattice in this state; (ii) they break the particle-hole symmetry and thus lead to temperature dependence of the chemical potential even in the half-filled band case; (iii) they can lead to the appearance of a disorder point at which the charge correlation functions change in character, and to anomalous dilatation of the lattice.