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Concept information

high-energy astrophysics > particle astrophysics > cosmic ray > primary cosmic ray
... > theoretical physics aspects > field theory > classical field theory > electromagnetism > electromagnetic radiation > ionizing radiation > cosmic ray > primary cosmic ray

Preferred term

primary cosmic ray  

Definition

  • The cosmic rays which arrive on the Earth's atmosphere from the outer space. The primary cosmic rays are very high energy protons and to a lesser extent heavier nuclei which rain upon the Earth from all diretions in the outer space. They contain about 90% protons, 7% alpha particles and about 1% still heavier nuclei of amost all the atoms from Li to Ni (mass number< 60). (An Etymological Dictionary of Astronomy and Astrophysics, by M. Heydari-Malayeri, https://dictionary.obspm.fr/index.php?formSearchTextfield=primary+cosmic+rays&formSubmit=Search&showAll=1)

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Entry terms

  • primary cosmic radiation

In other languages

URI

http://data.loterre.fr/ark:/67375/MDL-LKWPSQWP-J

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