Abstract
The energy spectrum of surviving primary cosmic-ray protons without collision in the atmosphere has been obtained from the observation of high-energy nuclear bursts produced by singly charged particles in the energy range 3 TeV to 30 TeV without accompanying air shower particles at Chacaltaya, Bolivia (5200 m a.s.l. or 550 gcm-2 atmospheric depth). Comparison of this spectrum with an extrapolation of the energy spectrum of primary cosmic-ray protons obtained by Ryan et al. to higher energies with the same exponent shows a logarithmic rise of the cross-section for proton-air-nucleus collisions from 3 TeV to 9 TeV.
Original language | English |
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Pages (from-to) | 263-282 |
Number of pages | 20 |
Journal | Il Nuovo Cimento B Series 11 |
Volume | 27 |
Issue number | 2 |
DOIs | |
State | Published - Jun 1975 |