Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-11-06
Astronomy and Astrophysics
Astrophysics
Changed title, statistic improved, more detailed analysis
Scientific paper
Substantial fluxes of protons and leptons with energies below the geomagnetic cutoff have been measured by the AMS experiment at altitudes of 370-390 Km, in the latitude interval +/- 51.7 degrees. The production mechanisms of the observed trapped fluxes are investigated in detail by means of the FLUKA Monte Carlo simulation code. All known processes involved in the interaction of the cosmic rays with the atmosphere (detailed descriptions of the magnetic field and atmospheric density, as well as the electromagnetic and nuclear interaction processes) are included in the simulation. The results are presented and compared with the experimental data, indicating good agreement with the observed fluxes. The impact of secondary proton flux on particle production in atmosphere is briefly discussed.
Alpat Behcet
Battiston Roberto
Battistoni Giuseppe
Bertucci Bruna
Burger W. J.
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