Abstract
Comparison of Hadronic Interaction Models Used in Air Shower Simulations and of Their In uence on Shower Development and Observables In the extensive air shower simulation program CORSIKA the interaction models HDPM and VENUS are available to simulate hadronic reactions of cosmic rays in the atmosphere. In the most recent version of CORSIKA we have implemented three further interaction models which are widely used in air shower simulations, namely SIBYLL, QGSJET, and DPMJET. A comparison of the interaction models with each other and with experimental data was performed for primary nucleons, mesons, and nuclei in the energy range from Elab = 10 11 to 10 eV colliding with nucleons and nitrogen. In addition, the properties of 10 and 10 eV air showers induced by primary p and Fe nuclei simulated with the di erent models were examined.
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