@Article{KöhnDiniHara:2017:PrMeLe,
author = "K{\"o}hn, Christoph and Diniz, Gabriel Sousa and Harakeh, Muhsin
N.",
affiliation = "{Technical University of Denmark} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {University of Groningen}",
title = "Production mechanisms of leptons, photons, and hadrons and their
possible feedback close to lightning leaders",
journal = "Journal of Geophysical Research: Atmospheres",
year = "2017",
volume = "122",
number = "2",
pages = "1365--1383",
month = "Jan.",
keywords = "cross-section analysis, feedback model, Monte Carlo simulation,
neutron beam, positron beam, terrestrial gamma-ray flash.",
abstract = "It has been discussed that lightning flashes emit high-energy
electrons, positrons, photons, and neutrons with single energies
of several tens of MeV. In the first part of this paper we study
the absorption of neutron beams in the atmosphere. We initiate
neutron beams of initial energies of 350 keV, 10 MeV, and 20 MeV
at source altitudes of 4 km and 16 km upward and downward and see
that in all these cases neutrons reach ground altitudes and that
the cross-section areas extend to several km2. We estimate that
for terrestrial gamma-ray flashes approximately between 10 and
2000 neutrons per ms and m2 are possibly detectable at ground, at
6 km, or at 500 km altitude. In the second part of the paper we
discuss a feedback model involving the generation and motion of
electrons, positrons, neutrons, protons, and photons close to the
vicinity of lightning leaders. In contrast to other feedback
models, we do not consider large-scale thundercloud fields but
enhanced fields of lightning leaders. We launch different photon
and electron beams upward at 4 km altitude. We present the spatial
and energy distribution of leptons, hadrons, and photons after
different times and see that leptons, hadrons, and photons with
energies of at least 40 MeV are produced. Because of their high
rest mass hadrons are measurable on a longer time scale than
leptons and photons. The feedback mechanism together with the
field enhancement by lightning leaders yields particle energies
even above 40 MeV measurable at satellite altitudes.",
doi = "10.1002/2016JD025445",
url = "http://dx.doi.org/10.1002/2016JD025445",
issn = "2169-8996 and 2169-897X",
language = "en",
targetfile = "kohn_production.pdf",
urlaccessdate = "05 maio 2024"
}