A comparative study of simulated air shower longitudinal profiles is presented. An appropriate thinning level for the calculations is first determined empirically. High statistics results are then provided, over a wide energy range, (1014.0 to 1020.5 eV), for proton & iron primaries, using four combinations of the MOCCA & CORSIKA program frameworks, and the SIBYLL & QGSjet high energy hadronic ...

Cosmic Ray Tau Neutrino Telescopes (CRTNT) using for sub-EeV cosmic ray measurement is discussed. Performances of a stereoscope configuration of a tower of those telescopes plus two side-triggers are studied by using a detailed detector simulation driven by Corsika. Detector aperture as a function of shower energy above 10 eV is calculated. Event rate of about 20k per year for the second knee m...

Spatial distributions of energy deposited by an extensive air shower in the atmosphere through ionization, as obtained from the CORSIKA simulation program, are used to find the fluorescence light distribution in the optical image of the shower. The shower image derived in this way is somewhat smaller than that obtained from the NKG lateral distribution of particles in the shower. The size of th...

A simulation study of the energy released in air due to the development of an extensive air shower has been carried out using the CORSIKA code. The contributions to the energy release from different particle species and energies as well as the typical particle densities are investigated. Special care is taken of particles falling below the energy threshold of the simulation which contribute abo...

The fluctuations of γ ray families simulated with CORSIKA in the energy region 3×1010eV on the basis of standard Lns collider physics exhibits alignments of secondaries in the stratosphere and at ground level. The remarkable event registrated on the Concorde doesn’t fit well however those cases ; The possible hints of new mechanisms, especially the valence diquark breaking, are considered. Obse...

The interpretation of extensive air shower (EAS) measurements often requires the comparison with EAS simulations based on high-energy hadronic interaction models. These interaction models have to extrapolate into kinematical regions and energy ranges beyond the limit of present accelerators. Therefore, it is necessary to test whether these models are able to describe the EAS development in a co...

In this analysis the structure of hadronic shower cores is investigated with the KASCADE calorimeter. The energy, position, and direction of incidence for individual hadrons above 50 GeV are measured. In parallel, the spatial structure is studied using the simulation program CORSIKA with the hadronic interaction model QGSJET. First results are presented for the showers with primary energies abo...

Received XXX At high energy, cosmic rays can only be studied by measuring the extensive air showers they produce in the atmosphere of the Earth. Although the main features of air showers can be understood within a simple model of successive interactions, detailed simulations and a realistic description of particle production are needed to calculate observables relevant to air shower experiments...

Cosmic Ray Tau Neutrino Telescopes (CRTNT) using for sub-EeV cosmic ray measurement is discussed. Performances of a stereoscope configuration of a tower of those telescopes plus two side-triggers are studied by using a detailed detector simulation driven by Corsika. Detector aperture as a function of shower energy above 10 eV is calculated. Event rate of about 20k per year for the second knee m...