About the possibility for an unbiased estimation of primary energy spectra around the knee based on cherenkov light in EAS
Abstract
:The characteristics of EAS with energies 104 -107 GeV are calculated with CORSIKA 5.62 code for observation level 536 g/cm2 for proton and iron primaries .The shower selection was carried out taking into account the detector displacement described in the recent HECRE proposal for Chacaltaya. As proved before, the extensive air shower (EAS) selection with αe(r0)=const gives the possibility to select with constant efficiency showers with given energies independly of the atomic number of the initiating primary particle. Similar result is obtained selecting showers with constant value of a new shower parameter η(r), based on the Cerenkov light densities at distances 65 and 200m from the axis of the EAS with energies 104 -107 GeV at observation level 536 g/cm2 . By this way it is possible to obtain information about the mass composition and energy spectrum of the primary cosmic radiation at energies 104 -107 GeV selecting EAS with η(r) =const and applying extended complex analysis of the electron and muon components at Chacaltaya observation level.
- Publication:
-
International Cosmic Ray Conference
- Pub Date:
- August 2001
- Bibcode:
- 2001ICRC....5.1968B