A measurement of the average longitudinal development profile of cosmic ray air showers between 1017 and 1018 eV

T. Abu-Zayyad, K. Belov, D. J. Bird, J. Boyer, Z. Cao, M. Catanese, G. F. Chen, R. W. Clay, C. E. Covault, H. Y. Dai, B. R. Dawson, J. W. Elbert, B. E. Fick, L. F. Fortson, J. W. Fowler, K. G. Gibbs, M. A.K. Glasmacher, K. D. Green, Y. Ho, A. HuangC. C. Jui, M. J. Kidd, D. B. Kieda, B. C. Knapp, S. Ko, C. G. Larsen, W. Lee, E. C. Loh, E. J. Mannel, J. Matthews, J. N. Matthews, B. J. Newport, D. F. Nitz, R. A. Ong, K. M. Simpson, J. D. Smith, D. Sinclair, P. Sokolsky, C. Song, J. K.K. Tang, S. B. Thomas, J. C. Van Der Velde, L. R. Wiencke, C. R. Wilkinson, S. Yoshida, X. Z. Zhang

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Abstract

The average extensive air shower longitudinal development profile is measured. Events between 1017 and 1018 eV recorded by the HiRes/MIA hybrid experiment are used for the average profile. Several functional forms are examined using this average profile. The best-fit parameters for the above functions are determined.

Original languageEnglish (US)
Pages (from-to)1-11
Number of pages11
JournalAstroparticle Physics
Volume16
Issue number1
DOIs
StatePublished - Oct 2001

Bibliographical note

Funding Information:
We acknowledge the assistance of the command and staff of Dugway Proving Ground. We are very grateful for discussions with James W. Cronin and Paul Sommers. This work is supported by the National Science Foundation under contract no. PHY-93-21949, PHY-93-22298 and the US Department of Energy.

Copyright:
Copyright 2005 Elsevier Science B.V., Amsterdam. All rights reserved.

Keywords

  • 13.85.Tp
  • 96.40.Pq
  • 98.70.Sa
  • Air shower
  • Cosmic ray

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