Cosmic ray ionization of lower Venus atmosphere

Details Cosmic ray ionization of lower Venus atmosphere Cosmic ray ionization of lower Venus atmosphere

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995adspr..15...99u&link_type=abstract

Advances in Space Research (ISSN 0273-1177), vol. 15, no. 4, p. (4)99-(4)108

Mathematics

1

Cosmic Rays, Flux Density, Ionization, Mathematical Models, Planetary Magnetic Fields, Venus (Planet), Venus Atmosphere, Electrons, Ions, Muons, Neutrons, Pions

Scientific paper

The high energy solar and galactic cosmic rays are known to ionize Earth's atmosphere. The cosmic ray degradation and production of electron-ion pairs in Venus ionosphere are computed. At lower altitudes, the Venus atmosphere is dense and cosmic ray particles are known to decay and give rise to various charged and neutral particles. The flux and degradation of dominant cascade particles, namely neutrinos and pions, are computed and ionization contributions at lower altitudes are estimated. Using the height profile of pion flux, the muon ray flux is computed and used to estimate ionization at lower altitudes. It is shown that cosmic-ray produced ionization descends to much lower altitudes intercepting the thickness of the Venus cloud deck. The dynamical features of the Venus cloud deck are used to show the likely charging and charge separation processes resulting in cloud-to-cloud lightning discharges.

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