Anomalies in the energy spectrum of cosmic ray nuclei in spacecraft orbits

Abstract

This study analyzes the energy spectra of cosmic ray nuclei (H, Ne, Si, Fe) in the energy range from 1 to 1000 MeV per nucleon using spacecraft data obtained over seven years of observations. The calculated spectra are compared with experimental measurements from the GOES and ACE satellites. A previously unreported anomaly—a bend in the energy spectrum in the range of 8–50 MeV per nucleon—is identified in near-Earth space. The results indicate that the detected spectral anomalies are associated with solar proton events and may reflect the interaction of energetic particle fluxes with local magnetic heterogeneities. The findings have both scientific significance for understanding cosmic ray propagation and practical importance for spacecraft mission planning and radiation risk assessment.

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