3-11 July 2007
Merida, Mexico
Mexico/General timezone
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Contribution Poster

Merida, Mexico - Regency (Hyatt)

Some remarks about lateral distribution funtion of charged particles at energy above 10^17 eV.

Speakers

  • Mr. Jorge COTZOMI

Primary authors

  • Mr. Jorge COTZOMI (Moscow State University and Universidad Autonoma de Puebla)
  • Dr. Yurii FORMIN (D.V.Skobeltsyn Institute of Nuclear Physics of M.V.Lomonosov Moscow State University)
  • Prof. Nikolay KALMYKOV (D.V.Skobeltsyn Institute of Nuclear Physics of M.V.Lomonosov Moscow State University)
  • Dr. German KULIKOV (D.V.Skobeltsyn Institute of Nuclear Physics of M.V.Lomonosov Moscow State University)
  • Dr. Vladimir SULAKOV (D.V.Skobeltsyn Institute of Nuclear Physics of M.V.Lomonosov Moscow State University)

Abstract content

The lateral distribution funtion (LDF) of charged particles is a basic characteristics of extensive air showers (EAS). It is necessary for determination of total number of particles at observation level and this number is used as an estima of primary energy. We consider the experimental LDF's obtained with MSU, Yakutsk and AGASA arrays. It should be noted that scintillator detectors of the AGASA and Yakutsk arrays detectors measure the energy deposit of shower particles at different distances from shower core whereas Geiger counters employed at the MSU array measure the number of charged particles directly. Experimental data are compared with calculations in the framework of the QGSJET model. It is shown that some discrepancy between various LDF's exists.

Reference

Proceedings of the 30th International Cosmic Ray Conference; Rogelio Caballero, Juan Carlos D'Olivo, Gustavo Medina-Tanco, Lukas Nellen, Federico A. Sánchez, José F. Valdés-Galicia (eds.); Universidad Nacional Autónoma de México, Mexico City, Mexico, 2008; Vol. 4 (HE part 1), pages 183-186