DETECTION OF A CHANGE OF SLOPE IN THE SPECTRUM OF HEAVY MASS COSMIC RAYS PRIMARIES BY THE KASCADE-GRANDE EXPERIMENT

Authors

  • A. Chiavassa Dipartimento di Fisica, Università degli Studi di Torino
  • W. D. Apel Institut für Kernphysik, KIT – Karlsruher Institut für Technologie
  • J. C. Arteaga-Velázquez Universidad Michoacana, Instituto de Física y Matemáticas, Morelia
  • K. Bekk Institut für Kernphysik, KIT – Karlsruher Institut für Technologie
  • M. Bertaina Dipartimento di Fisica, Università degli Studi di Torino
  • J. Blümer Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany c Universidad Michoacana, Instituto de Física y Matemáticas, Morelia, Mexico
  • H. Bozdog Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • I. M. Brancus National Institute of Physics and Nuclear Engineering, Bucharest, Romania
  • E. Cantoni Dipartimento di Fisica, Università degli Studi di Torino, Italy; Osservatorio Astrofisico di Torino, INAF Torino, Italy
  • F. Cossavella Institut für Experimentelle Kernphysik, KIT – Karlsruher Institut für Technologie, Germany; Department of Physics, University of Bucharest, Bucharest, Romania
  • K. Daumiller Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • V. de Souza Universidade São Paulo, Instituto de Física de São Carlos, Brasil
  • F. Di Pierro Dipartimento di Fisica, Università degli Studi di Torino, Italy
  • P. Doll Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • R. Engel Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • J. Engler Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • M. Finger Institut für Experimentelle Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • B. Fuchs Institut für Experimentelle Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • D. Fuhrmann Fachbereich Physik, Universität Wuppertal, Germany
  • F. Garino Institut für Experimentelle Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • H. J. Gils Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • R. Glasstetter Fachbereich Physik, Universität Wuppertal, Germany
  • C. Grupen Department of Physics, Siegen University, Germany
  • A. Haungs Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • D. Heck Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • J. R. Hörandel Dept. of Astrophysics, Radboud University Nijmegen, The Netherlands
  • D. Huber Institut für Experimentelle Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • T. Huege Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • K.-H. Kampert Fachbereich Physik, Universität Wuppertal, Germany
  • D. Kang Institut für Experimentelle Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • H. O. Klages Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • K. Link Institut für Experimentelle Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • P. Łuczak National Centre for Nuclear Research, Department of Cosmic Ray Physics, Lodz, Poland
  • M. Ludwig Institut für Experimentelle Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • H. J. Mathes Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • H. J. Mayer Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • M. Melissas Institut für Experimentelle Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • J. Milke Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • B. Mitrica National Institute of Physics and Nuclear Engineering, Bucharest, Romania
  • C. Morello Osservatorio Astrofisico di Torino, INAF Torino, Italy
  • J. Oehlschläger Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • S. Ostapchenko Max-Planck-Institut für Physik, München, Germany
  • N. Palmieri Institut für Experimentelle Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • M. Petcu National Institute of Physics and Nuclear Engineering, Bucharest, Romania
  • T. Pierog Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • H. Rebel Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • M. Roth Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • H. Schieler Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • S. Schoo Institut für Experimentelle Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • F. G. Schröder Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • O. Sima Department of Physics, University of Bucharest, Bucharest, Romania
  • G. Toma National Institute of Physics and Nuclear Engineering, Bucharest, Romania
  • G. C. Trinchero Osservatorio Astrofisico di Torino, INAF Torino, Italy
  • H. Ulrich Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • A. Weindl Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • J. Wochele Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany
  • M. Wommer Institut für Kernphysik, KIT – Karlsruher Institut für Technologie, Germany c Universidad
  • J. Zabierowski National Centre for Nuclear Research, Department of Cosmic Ray Physics, Lodz, Poland

DOI:

https://doi.org/10.14311/AP.2013.53.0728

Abstract

KASCADE-Grande is an extensive air shower experiment devoted to the study of cosmic rays in the 1016 ÷ 1018 eV energy range. The array is composed by different detectors allowing independent measurements of the number of muons (Nμ) and charged particles (Nch) of extensive air showers (EAS). These two observables are then used to study the primary energy spectrum, separating the events in two samples, on the basis of the shower size ratio, corrected for attenuation in the atmosphere, lnNμ/ lnNch. The two samples represent the light and heavy mass groups of the primaries. In the studied energy range only the spectrum of heavy primaries shows a significant change of slope, the energy (estimated using the QGSJET II hadronic interaction model) of this feature is in agreeement with the expectations of a rigidity dependent knee feature.

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Published

2013-12-18

Issue

Vol. 53 (2013): Supplement

Section

Articles

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How to Cite

Chiavassa, A., Apel, W. D., Arteaga-Velázquez, J. C., Bekk, K., Bertaina, M., Blümer, J., Bozdog, H., Brancus, I. M., Cantoni, E., Cossavella, F., Daumiller, K., de Souza, V., Di Pierro, F., Doll, P., Engel, R., Engler, J., Finger, M., Fuchs, B., Fuhrmann, D., … Zabierowski, J. (2013). DETECTION OF A CHANGE OF SLOPE IN THE SPECTRUM OF HEAVY MASS COSMIC RAYS PRIMARIES BY THE KASCADE-GRANDE EXPERIMENT. Acta Polytechnica, 53(A), 728-731. https://doi.org/10.14311/AP.2013.53.0728