What we can infer about the nuclear cosmic ray composition from the EAS longitudinal development

Details What we can infer about the nuclear cosmic ray composition from the EAS longitudinal development What we can infer about the nuclear cosmic ray composition from the EAS longitudinal development

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aph.....8...77r&link_type=abstract

ASTROPARTICLE PHYSICS, Volume 8, Issue 1-2, p. 77-89.

Physics

Scientific paper

Results from a detailed Monte Carlo simulation for electromagnetic and hadronic cascades in the atmosphere, generated by primary gamma-rays, p, O and Fe are provided in the primary energy range 10^12-10^16 eV for vertical incident showers. In the simulation of the Extensive Air Showers (EAS) development, the CORSIKA (COsmic Ray SImulator for KAscade) code has been used to perform a full simulation of the electromagnetic and hadronic interactions. The main aims of this simulation are to obtain accurate information on the longitudinal development of the electromagnetic component, for both pure electromagnetic and hadronic cascades, for different primary cosmic rays. Results on the dependence of the shower size and the photon number with primary energy are obtained. Ratios between the maximum development depth parameter and primary particle energy or the shower size have been studied and predicted values for the electron and photon content and fluctuations on these parameters have been determined at the maximum development depth of the EAS and at mountain altitude (X=800 g cm^-2). We also seek to provide relations to interpret the experimental data, for those who do not have detailed simulation calculations available and also to provide material for a full and deep comparison of air shower Monte Carlo codes.

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