Measurement of Cosmic-Ray Proton and Antiproton Spectra at Mountain Altitude
Abstract
Cosmic-ray proton and antiproton spectra were measured at mountain altitude, 2770 m above sea level. We observed more than 2 x 105 protons and 102 antiprotons in a kinetic energy range between 0.25 and 3.3 GeV. The zenith-angle dependence of proton flux was obtained. The observed spectra were compared with theoretical predictions.
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