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Properties of a New Group of Cosmic Nuclei: Results from the Alpha Magnetic Spectrometer on Sodium, Aluminum, and Nitrogen

We report the properties of sodium (Na) and aluminum (Al) cosmic rays in the rigidity range 2.15 GV to 3.0 TV based on 0.46 million sodium and 0.51 million aluminum nuclei collected by the Alpha Magnetic Spectrometer experiment on the International Space Station. We found that Na and Al, together with nitrogen (N), belong to a distinct cosmic ray group. In this group, we observe that, similar to the N flux, both the Na flux and Al flux are well described by the sums of a primary cosmic ray component (proportional to the silicon flux) and a secondary cosmic ray component (proportional to the fluorine flux). The fraction of the primary component increases with rigidity for the N, Na, and Al fluxes and becomes dominant at the highest rigidities. The Na/Si and Al/Si abundance ratios at the source, $0.036 \pm 0.003$ for Na/Si and $0.103 \pm 0.004$ for Al/Si, are determined independent of cosmic ray propagation.

Phys. Rev. Lett. 127, 021101
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AMS-02 Publications

Total citations to-date: 5, 261
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Properties of a New Group of Cosmic Nuclei: Results from the Alpha Magnetic Spectrometer on Sodium, Aluminum, and Nitrogen
Phys. Rev. Lett. 127, 021101 (2021), Citations: 1, View supplemental material and data
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Properties of Heavy Secondary Fluorine Cosmic Rays: Results from the Alpha Magnetic Spectrometer
Phys. Rev. Lett. 126, 081102 (2021), Citations: 7, View supplemental material and data
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The Alpha Magnetic Spectrometer (AMS) on the International Space Station: Part II - Results from the First Seven Years
Phys. Rep. 894, 1 (2021), Citations: 33, View supplemental material and data
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Properties of Iron Primary Cosmic Rays: Results from the Alpha Magnetic Spectrometer
Phys. Rev. Lett. 126, 041104 (2021), Citations: 16, View supplemental material and data
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Properties of Neon, Magnesium, and Silicon Primary Cosmic Rays Results from the Alpha Magnetic Spectrometer
Phys. Rev. Lett. 124, 211102 (2020), Citations: 31, View supplemental material and data
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Properties of Cosmic Helium Isotopes Measured by the Alpha Magnetic Spectrometer
Phys. Rev. Lett. 123, 181102 (2019), Citations: 18, View supplemental material and data
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Towards Understanding the Origin of Cosmic-Ray Electrons
Phys. Rev. Lett. 122, 101101 (2019), Citations: 82, View supplemental material and data
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Towards Understanding the Origin of Cosmic-Ray Positrons
Phys. Rev. Lett. 122, 041102 (2019), Citations: 146, View supplemental material and data
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Precision Measurement of Cosmic-Ray Nitrogen and its Primary and Secondary Components with the Alpha Magnetic Spectrometer on the International Space Station
Phys. Rev. Lett. 121, 051103 (2018), Citations: 55, View supplemental material and data
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Observation of Complex Time Structures in the Cosmic-Ray Electron and Positron Fluxes with the Alpha Magnetic Spectrometer on the International Space Station
Phys. Rev. Lett. 121, 051102 (2018), Citations: 60, View supplemental material and data
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Observation of Fine Time Structures in the Cosmic Proton and Helium Fluxes with the Alpha Magnetic Spectrometer on the International Space Station
Phys. Rev. Lett. 121, 051101 (2018), Citations: 68, View supplemental material and data
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Observation of New Properties of Secondary Cosmic Rays Lithium, Beryllium, and Boron by the Alpha Magnetic Spectrometer on the International Space Station
Phys. Rev. Lett. 120, 021101 (2018), Citations: 157, View supplemental material and data
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Observation of the Identical Rigidity Dependence of He, C, and O Cosmic Rays at High Rigidities by the Alpha Magnetic Spectrometer on the International Space Station
Phys. Rev. Lett. 119, 251101 (2017), Citations: 170, View supplemental material and data
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Precision Measurement of the Boron to Carbon Flux Ratio in Cosmic Rays from 1.9 GV to 2.6 TV with the Alpha Magnetic Spectrometer on the International Space Station
Phys. Rev. Lett. 117, 231102 (2016), Citations: 269, View supplemental material and data
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Antiproton Flux, Antiproton-to-Proton Flux Ratio, and Properties of Elementary Particle Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station
Phys. Rev. Lett. 117, 091103 (2016), Citations: 417, View supplemental material and data
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Precision Measurement of the Helium Flux in Primary Cosmic Rays of Rigidities 1.9 GV to 3 TV with the Alpha Magnetic Spectrometer on the International Space Station
Phys. Rev. Lett. 115, 211101 (2015), Citations: 392, View supplemental material and data
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Precision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station
Phys. Rev. Lett. 114, 171103 (2015), Citations: 704, View supplemental material and data
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Precision Measurement of the (${\rm e}^+$ + ${\rm e}^−$) Flux in Primary Cosmic Rays from 0.5 GeV to 1 TeV with the Alpha Magnetic Spectrometer on the International Space Station
Phys. Rev. Lett. 113, 221102 (2014), Citations: 320, View supplemental material and data
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Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station
Phys. Rev. Lett. 113, 121102 (2014), Citations: 539, View supplemental material and data
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High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5 – 500 GeV with the Alpha Magnetic Spectrometer on the International Space Station
Phys. Rev. Lett. 113, 121101 (2014), Citations: 593, View supplemental material and data
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First Result from the Alpha Magnetic Spectrometer on the International Space Station: Precision Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5–350 GeV
Phys. Rev. Lett. 110, 141102 (2013), Citations: 1,183, View supplemental material and data

* Citation information from High-Energy Physics Literature Database.