Primary Proton Spectrum of Cosmic Rays measured with Single Hadrons

Abstract

The flux of cosmic-ray induced single hadrons near sea level has been measured with the large hadron calorimeter of the KASCADE experiment. The measurement corroborates former results obtained with detectors of smaller size if the enlarged veto of the 304 m^2 calorimeter surface is encounted for. The program CORSIKA/QGSJET is used to compute the cosmic-ray flux above the atmosphere. Between E_0=300 GeV and 1 PeV the primary proton spectrum can be described with a power law parametrized as dJ/dE_0=(0.15+-0.03)*E_0^{-2.78+-0.03} m^-2 s^-1 sr^-1 TeV^-1. In the TeV region the proton flux compares well with the results from recent measurements of direct experiments.

13 pages, accepted by Astrophysical Journal

References in corpus (7)

• On the knee in the energy spectrum of cosmic rays
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Cited by in corpus (15)

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• Klein-Nishina steps in the energy spectrum of galactic cosmic ray electrons
• Confinement-Driven Spatial Variations in the Cosmic Ray Flux
• On the e${}^{+}$e${}^{-}$ excesses and the knee of the cosmic ray spectra -- hints of cosmic rays acceleration at young supernova remnants
• Cosmic rays from the knee to the second knee: 10^14 to 10^18 eV
• High-energy cosmic ray fluxes in the Earth atmosphere: calculations vs experiments
• A review of experimental results at the knee
• Cosmic-ray composition and its relation to shock acceleration by supernova remnants
• Results from the KASCADE, KASCADE-Grande, and LOPES experiments
• Overview on direct and indirect measurements of cosmic rays - Some thoughts on galactic cosmic rays and the knee
• Science with the ASTRI prototype
• Shape of primary proton spectrum in multi-TeV region from data on vertical muon flux
• Spectra of hadrons and muons in the atmosphere: primary spectra, characteristics of hadron-air interactions
• Shocking Signals of Dark Matter Annihilation
• Design Considerations for the Next Generation of Atmospheric Imaging Cherenkov Telescopes