Alternative description of particle shower longitudinal profile

Abstract

An alternative parametrization of particle shower longitudinal profile is presented. The accuracy of obtained shower profile description is about 2 − 3% for the 0 − 1500 g/cm 2 atmosphere slant depths and primary H, He,. . . Fe nuclei in 1 PeV-10 EeV energy range. It is shown that the shape of shower profile depends only on the nucleon energy, whereas the maximum shower size also depends on the energy of parental nucleus. Results are based on the CORSIKA simulated shower profiles and are presented in comparison with Gaisser-Hillas parametrization.PACS numbers: 96.50. S-, 96.50.sd, 96.50.sb