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Properties of Iron Primary Cosmic Rays: Results from the Alpha Magnetic Spectrometer

  • AMS Collaboration
  • Shandong Institute of Advanced Technology
  • National Institute for Subatomic Physics
  • University of Geneva
  • CIEMAT
  • RWTH Aachen University
  • Massachusetts Institute of Technology
  • National Institute for Nuclear Physics
  • Laboratório de Instrumentação e Física Experimental de Partículas
  • Jülich Research Centre
  • CERN
  • University of Groningen
  • University of Trento
  • University of Perugia
  • University of Hawai'i at Mānoa
  • Karlsruhe Institute of Technology
  • NASA Johnson Space Center
  • University of Rome La Sapienza
  • Kiel University
  • CNRIROE
  • Academia Sinica - Institute of Physics
  • National Central University
  • CAS - Institute of High Energy Physics
  • University of Chinese Academy of Sciences
  • Université Grenoble Alpes
  • University of Bologna
  • Shandong University

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摘要

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 million 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.

源语言英语
文章编号129
期刊Proceedings of Science
395
出版状态已出版 - 18 3月 2022
活动37th International Cosmic Ray Conference, ICRC 2021 - Virtual, Berlin, 德国
期限: 12 7月 202123 7月 2021

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