EPJ Web of Conferences
Volume 167, 2018Plasma Physics by Laser and Applications (PPLA 2017)
|Number of page(s)||6|
|Section||High laser intensity facilities|
|Published online||09 January 2018|
Why do Electrons with “Anomalous Energies” appear in High-Pressure Gas Discharges?
Institute of High Current Electronics, Laboratory of Theoretical Physics, 634055 2/3 Akademichesky ave, Tomsk, Russia
2 National Research Tomsk State University, Faculty of Physics, 634050 36 Lenin ave. Tomsk, Russia
* Corresponding author: email@example.com
Published online: 9 January 2018
Experimental studies connected with runaway electron beams generation convincingly shows the existence of electrons with energies above the maximum voltage applied to the discharge gap. Such electrons are also known as electrons with “anomalous energies”. We explain the presence of runaway electrons having so-called “anomalous energies” according to physical kinetics principles, namely, we describe the total ensemble of electrons with the distribution function. Its evolution obeys Boltzmann kinetic equation. The dynamics of self-consistent electromagnetic field is taken into the account by adding complete Maxwell’s equation set to the resulting system of equations. The electrodynamic mechanism of the interaction of electrons with a travelling-wave electric field is analyzed in details. It is responsible for the appearance of electrons with high energies in real discharges.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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