Abstract
Gamma-ray pulses are calculated from 2D numerical simulations of upward atmospheric discharge in a self-consistent electric field using the multigroup approach to the kinetics of relativistic runaway electrons. Thecalculated numbers and spectra of γ-rays are consistent with the data on terrestrial γ-ray flashes observed aboard spacecraft. The calculated runaway electron flux is concentrated mainly within the domain of the blue jet fluorescence. This proves that exactly this domain is a source of the γ-ray flashes. One γ-ray flash generates ∼1014-1015 photonuclear neutrons.
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Babich, L.P., Kudryavtsev, A.Y., Kudryavtseva, M.L. et al. Terrestrial gamma-ray flashes and neutron pulses from direct simulations of gigantic upward atmospheric discharge. Jetp Lett. 85, 483–487 (2007). https://doi.org/10.1134/S0021364007100037
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DOI: https://doi.org/10.1134/S0021364007100037