New understanding of nuclei spectra properties observed by the AMS-02 experiment

The AMS-02 experiment has observed new properties of primary cosmic rays (CRs) categorized into two groups: He-C-O-Fe and Ne-Mg-Si-S, which are independent of CR propagation. In this study, we investigate the unexpected properties of these nuclei using a spatial propagation model. All nuclei spectra are accurately reproduced and separated into primary and secondary contributions. Our findings include: 1. Primary CR spectra are identical. 2. Our calculations align with AMS-02 results for primary-dominated nuclei within a 10% difference, but show significant discrepancies for the secondary-dominated nuclei. 3. The primary element abundance at around 200 GeV is presented and compared with previous solar and Galactic results. We hope that future DAMPE experiments can provide more experimental observational evidence to validate our model calculations.