Electron trapping by electric field reversal and Fermi mechanism

Details Electron trapping by electric field reversal and Fermi mechanism Electron trapping by electric field reversal and Fermi mechanism

2004-05-21

arxiv.org/abs/physics/0405116v1

Phys. Rev. E 70, 056409 (2004) (7 pages)

Physics

Plasma Physics

5 pages

Scientific paper

10.1103/PhysRevE.70.056409

We investigate the existence of the electric field reversal in the negative glow of a dc discharge, its location, the width of the well trapping the electrons, the slow electrons scattering time, and as well the trapping time. Based on a stress-energy tensor analysis we show the inherent instability of the well. We suggest that the Fermi mechanism is a possible process for pumping out electrons from the through, and linking this phenomena with electrostatic plasma instabilities. A power law distribution function for trapped electrons is also obtained. Analytical expressions are derived which can be used to calculate these characteristics from geometrical dimensions and the operational parameters of the discharge.

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