Fraction of protons in primary cosmic rays according to data from the PAMIR experiment in consideration of the response of X-ray emulsion chambers

摘要

Adjusted data on the fraction of protons in the mass composition of primary cosmic rays (PCRs) in the energy range of 10~(15)-10~(17) eV are presented. Adjustments are made according to detailed calculations of the response of the X-ray emulsion chamber in the PAMIR experiment. It is demonstrated that the fraction of protons in a PCR is 16-18% for E _0 ≈ 10~(15)-10~(16) eV and does not change within the error for E _0 ≈ 10~(16)-10~(17) eV.