Energy Spectrum and Elemental Composition in the PeV Region

Details Energy Spectrum and Elemental Composition in the PeV Region Energy Spectrum and Elemental Composition in the PeV Region

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....1..139r&link_type=abstract

Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I

Physics

4

Scientific paper

One of the main aims of KASCADE is the determination of flux spectra for different primary cosmic ray mass groups to disentangle the knee feature. The field detector array of the KASCADE experiment measures the electron and muon component of extensive air showers in the knee region with high precision. On the basis of these measured data corresponding two-dimensional shower size spectra are investigated. On the arbitrary assumption that the chemical composition consists of five primary mass groups the size distributions are deconvoluted to reconstruct the energy spectra of the groups in the energy range between 1015 eV and 1017 eV. The energy spectrum results in a knee-like bending and a steep ening above the knee. The top ology of the individual knee positions suggests a rigidity dependence.

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