The 4th International Symposium on Cosmic Rays and Astrophysics (ISCRA-2023)

Mass composition of cosmic rays with energies above 3*10^15 eV according to the data of the small Cherenkov array

27 Jun 2023, 16:00

1h

Hall of B-100 Lecture Room (National Research Nuclear University MEPhI)

Poster Cosmic rays of very high energies (> 1 PeV) Poster Session

Speakers

Valentina Mokhnachevskaya (SHICRA SB RAS) Stanislav Knurenko (SHICRA SB RAS)

Description

According to the long-term registration data from the small Cherenkov array of integral and Cherenkov differential detectors obtained the characteristics of air showers with energies above 310^15 eV, including of the maximum of the development of the Xmax. The dependence of Xmax on the shower energy found and the characteristics of air showers compared with the QGSjetII-04 model. From a comparison of Xmax with calculations based on the QGSetII-04 model for a proton and an iron nucleus, a conclusion obtained on the mass composition of cosmic rays in the energy range 310^15 – 2*10^18 eV.