AbstractWe have already reported the first result on the all-particle spectrum around the knee region based on data from 2000 November to 2001 October observed by the Tibet-III air-shower array. In this paper, we present an updated result using data set collected in the period from 2000 November through 2004 October in a wide range over 3 decades between 1014 and 1017eV, in which the position of the knee is clearly seen at around 4PeV. The spectral index is −2.68±0.02(stat.) below 1PeV, while it is −3.12±0.01(stat.) above 4PeV in the case of QGSJET+HD model, and various systematic errors should be carefully done in the very near future.


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    Title :

    The energy spectrum of all-particle cosmic rays around the knee region observed with the Tibet-III air-shower array


    Contributors:
    Amenomori, M. (author) / Ayabe, S. (author) / Bi, X.J. (author) / Chen, D. (author) / Cui, S.W. (author) / Danzengluobu (author) / Ding, L.K. (author) / Ding, X.H. (author) / Feng, C.F. (author) / Feng, Zhaoyang (author)

    Published in:

    Advances in Space Research ; 42 , 3 ; 467-472


    Publication date :

    2007-04-23


    Size :

    6 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Primary proton spectrum around the knee observed by the Tibet air-shower experiment

    Amenomori, M. / Ayabe, S. / Chen, D. et al. | Elsevier | 2005


    Primary proton spectrum around the knee observed by the Tibet air-shower experiment

    Amenomori, M. / Ayabe, S. / Chen, D. et al. | British Library Conference Proceedings | 2006