EPJ Web Conf.
Volume 201, 2019The XXII International Scientific Conference of Young Scientists and Specialists (AYSS-2018)
|Number of page(s)||5|
|Section||Mathematical Modeling and Computational Physics|
|Published online||04 February 2019|
Calculation of gain coefficient in Dwyer relativistic discharge feedback model of thunderstorm runway breakdown
Institute for Nuclear Research of RAS
2 Moscow Institute of Physics and Technology (State University)
3 Space Research Institute of RAS
Published online: 4 February 2019
Some of modern models used to describe TGF phenomenon and lightning ignition assume the existence of positive positron or gamma ray feedback. In this article we present some results of Monte-Carlo simulation of electromagnetic avalanches in atmospheric conditions and calculation of gain coefficient for both positron and gamma-ray feedback. The calculations were maid for realistic fields and acceleration cell sizes (up to 200 kV/m and 400 m respectively). The calculated gain coefficients for realistic fields and cell sizes are less than 10% which strongly discourages use of positron and gamma feedback model to describe TGF phenomenon and other gamma-production mechanisms in atmosphere under normal conditions. The simulation also shows possibility of selfsupporting positron feedback for extreme conditions like very high electric fields and very large cells.
© 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 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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