Properties of Iron Primary Cosmic Rays: Results from the Alpha Magnetic Spectrometer
Name
PhysRevLett.126.041104.pdf
Description
Published version
Size
883.83 KB
Format
Unknown
Checksum (MD5)
5f11df27950817a3d812c955b3fd9695
Author(s)
AMS Collaboration
Allen, M.S.
Behlmann, Matthew Daniel
Burger, Joseph D
Cai, Xudong
Capell, Michael H
Choutko, Vitali
Clark, C.
Dadzie, K.
Egorov, Alexander
Date Issued
January 2021
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
2021. "Properties of Iron Primary Cosmic Rays: Results from the Alpha Magnetic Spectrometer." Physical Review Letters, 126 (4).
Version
Final published version
Abstract
© 2021 authors. Published by the American Physical Society. We report the observation of new properties of primary iron (Fe) cosmic rays in the rigidity range 2.65 GV to 3.0 TV with 0.62×106 iron nuclei collected by the Alpha Magnetic Spectrometer experiment on the International Space Station. Above 80.5 GV the rigidity dependence of the cosmic ray Fe flux is identical to the rigidity dependence of the primary cosmic ray He, C, and O fluxes, with the Fe/O flux ratio being constant at 0.155±0.006. This shows that unexpectedly Fe and He, C, and O belong to the same class of primary cosmic rays which is different from the primary cosmic rays Ne, Mg, and Si class.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/physrevlett.126.041104
