Properties of Third Group of Cosmic Nuclei: Results from the Alpha Magnetic Spectrometer

We report the latest results on the properties of nitrogen (N), sodium (Na), and aluminium (Al) cosmic rays in the rigidity range from 2.15 GV to 3.0 TV based on 6.1 million N, 0.66 million Na and 0.72 million Al nuclei collected by the AMS. We observe all three fluxes are well described by the sums of a primary cosmic ray component and a secondary cosmic ray component. With our measurements, the abundance ratios at the source of N/O, Na/Si, and Al/Si are determined independent of cosmic ray propagation.