Abstract
It is known that, in the strong electric field, electrons undergo continuous acceleration [runaway electrons (REs)] even in dense media, receiving from the field more energy than lose via interactions with the ambient atomic particles. We, here, analyze the effect of the angular scattering of electrons in inelastic interactions on the runaway process. For this purpose, we developed a Monte Carlo (MC) code and, having carried out simulations of electron transport in the helium of atmospheric density, calculated the runaway rate at the field strengths of 50–300 kV cm−1. We show that different models of the electron scattering lead to a tenfold difference in the runaway rate magnitudes.
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