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Positron fraction, electron and positron spectra measured by AMS-02
EPJ Web of Conferences
A precise measurement by AMS-02 of the electron spectrum up to 700 GeV and of the positron spectrum and positron fraction in primary cosmic rays up 500 GeV are presented. The combined measurement of the cosmic-ray electron and positron energy spectra and fraction provide a unique tool to improve our understanding of the production, acceleration and propagation mechanism of cosmic rays. AMS-02 detector The AMS-02 detector  consists of a permanent magnet, nine planes of precision silicondoi:10.1051/epjconf/201612103006 fatcat:337loabtnzbnbhyunnhirtyy3m