Charge loss of proton flux as an additional source of plasma in F(sub 2) region

Details Charge loss of proton flux as an additional source of plasma in F(sub 2) region Charge loss of proton flux as an additional source of plasma in F(sub 2) region

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995adspr..16..159k&link_type=abstract

Advances in Space Research (ISSN 0273-1177), vol. 16, no. 1, p. (1)159-(1)162

Physics

Charge Transfer, Electron Precipitation, F 2 Region, Ion Production Rates, Plasma Generators, Proton Flux Density, Chemical Reactions, Monte Carlo Method, Proton Energy, Solar Cycles

Scientific paper

Ion and electron production rates are analyzed by the Monte-Carlo model of proton flux transport in the atmosphere. It was found that a flux of protons with initial energies from 0.2 to 16 keV loses the greater part of its charge at the altitudes of 300-400 km. This additional positive charge is mainly neutralized by upward electron flux from lower altitudes or by downward magnetospheric electron flux. Our results for initial proton energies less than 16 keV show that the rate of ion-electron production occurring in this way is greater than the ionization rate produced by direct collisional ionization at this altitude region. Therefore, the charge loss of proton fluxes is an additional reason for plasma accumulation in the F(sub 2) region. This mechanism seems to be particularly important in the evening sector of the diffuse aurora zone.

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