We report the properties of aluminum (Al) nuclei in cosmic rays measured in the rigidity range 2.15 GV to 3.0 TV with 0.51 million nuclei collected by the Alpha Magnetic Spectrometer experiment on the International Space Station. We observed that above 6 GV the Al spectrum is well described by the weighted sum of the silicon spectrum (primary cosmic rays) and the fluorine spectrum (secondary cosmic rays). The fraction of the primary component increases with rigidity and becomes dominant at highest rigidities. Al/Si abundance ratio at the source is determined independent of cosmic ray propagation.

Liu, Z., Paniccia, M., Zhang, C., Aguilar, M., Ali Cavasonza, L., Alpat, B., et al. (2022). Properties of Cosmic Aluminum Nuclei: Results from the Alpha Magnetic Spectrometer. In 37th International Cosmic Ray Conference, ICRC 2021 (pp.1-7). Sissa Media Lab.

Properties of Cosmic Aluminum Nuclei: Results from the Alpha Magnetic Spectrometer

Gervasi M.;Grandi D.;La Vacca G.;Rozza D.;Tacconi M.;Zannoni M.;
2022

Abstract

We report the properties of aluminum (Al) nuclei in cosmic rays measured in the rigidity range 2.15 GV to 3.0 TV with 0.51 million nuclei collected by the Alpha Magnetic Spectrometer experiment on the International Space Station. We observed that above 6 GV the Al spectrum is well described by the weighted sum of the silicon spectrum (primary cosmic rays) and the fluorine spectrum (secondary cosmic rays). The fraction of the primary component increases with rigidity and becomes dominant at highest rigidities. Al/Si abundance ratio at the source is determined independent of cosmic ray propagation.
slide + paper
Cosmic rays; Cosmology; Particle spectrometers; Rigidity; Space stations
English
37th International Cosmic Ray Conference, ICRC 2021 - 12 July 2021 through 23 July 2021
2021
37th International Cosmic Ray Conference, ICRC 2021
2022
395
18 March 2022
1
7
110
https://pos.sissa.it/395/110/pdf
none
Liu, Z., Paniccia, M., Zhang, C., Aguilar, M., Ali Cavasonza, L., Alpat, B., et al. (2022). Properties of Cosmic Aluminum Nuclei: Results from the Alpha Magnetic Spectrometer. In 37th International Cosmic Ray Conference, ICRC 2021 (pp.1-7). Sissa Media Lab.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/403457
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