skip to main content

Title: Cosmic muons, as messengers from the Universe

Penetrating from the outer space into the Earth atmosphere, primary cosmic rays are producing secondary radiation by the collisions with the air target subsequently decaying in hadrons, pions, muons, electrons and photons, phenomenon called Extensive air Shower (EAS). The muons, considered as the “penetrating” component, survive the propagation to the Earth and even they are no direct messenger of the Universe, they reflect the features of the primary particles. The talk gives a description of the development of the extensive air showers generating the secondary particles, especially the muon component. Results of the muon flux and of the muon charge ratio, (the ratio between the positive and the negative muons), obtained in different laboratories and in WILLI experiment, are shown. At the end, the contribution of the muons measured in EAS to the investigation of the nature of the primary cosmic rays is emphasized in KASCADE and WILLI-EAS experiments.
Authors:
 [1] ;  [2]
  1. Institutul National de Cercetare-Dezvoltare pentru Fizica si Inginerie Nucleara - Horia Hulubei, Magurele (Romania)
  2. Institut für Kernphysik, Karlsruhe Institute of Technology, Karlsruhe (Germany)
Publication Date:
OSTI Identifier:
22390970
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1645; Journal Issue: 1; Conference: Carpathian Summer School of Physics 2014, Sinaia (Romania), 13-26 Jul 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COSMIC MUONS; COSMIC RAY PROPAGATION; ELECTRONS; EXPERIMENT PLANNING; EXTENSIVE AIR SHOWERS; MINUS-PLUS RATIO; MUON DETECTION; PHOTONS; PIONS; PRIMARY COSMIC RADIATION; UNIVERSE