KASCADE (KArlsruhe Shower Core and Array DEtector) is determining flux spectra for different primary mass groups to disentangle the knee feature of the primary cosmic-ray energy spectrum. The energy spectra of the light element groups result in a knee-like bending and a steepening above the knee. The topology of the individual knee positions suggests a rigidity dependence. To proof the rigidity dependence the KASCADE array is now extended by a factor 10 in area. The major goal of KASCADE- Grande is the observation of the 'iron-knee' in the cosmic-ray spectrum at around 100 PeV which is expected following the KASCADE observations.
Energy spectrum and elemental composition of cosmic rays in the PeV region
BERTAINA, Mario Edoardo;CHIAVASSA, Andrea;NAVARRA, Gianni Maria;
2004-01-01
Abstract
KASCADE (KArlsruhe Shower Core and Array DEtector) is determining flux spectra for different primary mass groups to disentangle the knee feature of the primary cosmic-ray energy spectrum. The energy spectra of the light element groups result in a knee-like bending and a steepening above the knee. The topology of the individual knee positions suggests a rigidity dependence. To proof the rigidity dependence the KASCADE array is now extended by a factor 10 in area. The major goal of KASCADE- Grande is the observation of the 'iron-knee' in the cosmic-ray spectrum at around 100 PeV which is expected following the KASCADE observations.
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