LIGHT AND HEAVY COSMIC-RAY MASS GROUP ENERGY SPECTRA AS MEASURED BY THE MAKET-ANI DETECTOR

摘要

Standard models of cosmic-ray origin link the space accelerators of our Galaxy to the supernova remnants (SNRs) — expanding shells driven by very fast blast waves, usually with gamma-ray pulsars near the morphological center. Energy spectra of fully stripped ions with charges from Z = 1 to Z = 26 can provide clues to the validity of the standard model. Unfortunately, smeared data from the extensive air shower experiments do not provide enough information for such ion "spectroscopy." Nonetheless, the measurement of energy spectra of two or three broad mass groups (so-called light, intermediate, and heavy) will allow us to prove or disprove the "rigidity-dependent" acceleration. Recently, using multidimensional classification methods, the "all-particle" spectra from the MAKET-ANI experiment on Mount Aragats, in Armenia, was categorized into two distinct primary mass groups. We present, for the first time, the light and heavy nuclei spectra from the MAKET-ANI experiment.