Abstract
The energy spectrum of cosmic-ray hadrons between 10 GeV and 10 TeV at sea level was calculated by using a Monte-Carlo method. The results show a strong steepening of the hadron spectrum at about 200 GeV. The change in the spectral slope is interpreted as a combined effect due to the energy-dependent production cross section of hadron-air-nucleus collisions and the saturation of the relative intensity of pions in the hadron family. The magnitude of the change is found to vary from 0.5 to 0.7 depending on the form of the production cross section. The results agree with the experimental spectra obtained by the Turku double neutron monitor.
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