Computer Science
Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984p%26ss...32...31k&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 32, Jan. 1984, p. 31-39.
Computer Science
2
Angular Distribution, Auroral Zones, Electron Precipitation, Polarization (Waves), X Ray Spectra, Bremsstrahlung, Electron Energy, Energy Spectra, Monte Carlo Method, Photoionization, Photon Density
Scientific paper
Elastic and inelastic scattering cross section angular variations are computed, and used as the basis of Monte Carlo calculations of electron energy evolution and angular distributions at different heights in the ionosphere. Monoenergic, power law and exponential electron spectra with isotropic and monodirectional incidence, starting at 300 km altitude, have been used to obtain the angular and energy distributions at various height intervals. It is found that isotropic distribution incident at the top of the ionosphere becomes anisotropic, due to collisions at lower heights. The Sauter (1934) bremsstrahlung cross section, and the calculated electron flux, are used to compute the spectrum, angular distribution, and polarization of bremsstrahlung X-rays at different heights. Angular distribution and polarization studies can yield data about the nature of precipitating electron flux, and hence about the acceleration mechanism operating during electron precipitation.
Khosa P. N.
Moza K. L.
Rausaria R. R.
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