Properties of Heavy Secondary Fluorine Cosmic Rays Results from the Alpha Magnetic Spectrometer

Video Player is loading.
Loaded: 0%
Remaining Time 0:00
1x
  • Quality
    • 110 views

    • 0 favorites

    • uploaded July 16, 2021

    Discussion timeslot (ZOOM-Meeting): 19. July 2021 - 18:00
    ZOOM-Meeting URL: https://desy.zoom.us/j/91896950007
    ZOOM-Meeting ID: 91896950007
    ZOOM-Meeting Passcode: ICRC2021
    Corresponding Session: https://icrc2021-venue.desy.de/channel/18-Cosmic-Ray-Secondary-nuclei-observations-and-impact-on-theories-CRD/71
    Live-Stream URL: https://icrc2021-venue.desy.de/livestream/Discussion-06/7

    Abstract:
    'Precise knowledge of the charge and rigidity dependence of the secondary cosmic ray fluxes and the secondary-to-primary flux ratios is essential in the understanding of cosmic ray propagation. We report the properties of heavy secondary cosmic ray fluorine F in the rigidity R range 2.15 GV to 2.9 TV based on 0.29 million events collected by the Alpha Magnetic Spectrometer experiment on the International Space Station. The fluorine spectrum deviates from a single power law above 200 GV. The heavier secondary-to-primary F/Si flux ratio rigidity dependence is distinctly different from the lighter B/O (or B/C) rigidity dependence. In particular, above 10 GV, the (F/Si)/(B/O) ratio ratio can be described by a power law Rδ with δ = 0.052±0.007. This shows that the propagation properties of heavy cosmic rays, from F to Si, are different from those of light cosmic rays,from He to O, and that the secondary cosmic rays have two classes.'

    Authors: Qi Yan
    Co-Authors: Vitaly Choutko
    Collaboration: AMS

    Indico-ID: 707
    Proceeding URL: https://pos.sissa.it/395/104

    Tags:
    Presenter:

    Qi Yan


    Additional files

    More Media in "Scientific Contributions"