Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ennp.conf..244b&link_type=abstract
"EXOTIC NUCLEI AND NUCLEAR/PARTICLE ASTROPHYSICS . Proceedings of the Carpathian Summer School of Physics 2005 . Held 13-24 June
Astronomy and Astrophysics
Astrophysics
Scientific paper
The cosmic ray experiment KASCADE, set up in Forschungszentrurn Karlsruhe, Germany as a multi-detector installation, studying the electromagnetic, the muonic and the hadronic extensive air showers (EAS) component for each observed shower event, has explored the primary energy spectrum and the mass composition of cosmic rays in the energy range of the so called "knee" (around 3 PeV). The multidimensional analyses reveal a distinct knee (change of the spectral index of a power-law description) in the energy spectra of the light primary cosmic rays and the dominance of heavy particles with increasing energy. This result provides some important implications, discriminating various conjectures and astrophysical models of the origin of the knee. The KASCADE-Grande experiment is an upgrade of the KASCADE experiment extending the detection area by a factor of 10. It is motivated by studies of a higher primary energy range, looking for the knee-like features of the heavy components, which are expected to appear in the range of 100 PeV. The lecture describes details of motivation, of experimental lay-out and of first studies with KASCADE-Grande.
Apel W. D.
Badea A. F.
Bekk K.
Bercuci Alexandru
Bertaina M.
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