Direct measurements on cosmic ray protons through iron above about 1 TeV/amu have been performed in a series of balloon-borne experiments with emulsion chambers. The measured energy spectra of protons and helium are power laws with exponents of 2.77 + or - 0.09 and 2.72 + or - 0.11 in the energy range 5 to 500 TeV and 2 to 50 TeV/amu, respectively. The proton spectrum shows no evidence of the steepening near 2 TeV which was reported by other experiments. Helium has a slightly higher intensity compared to extrapolations from lower energy measurements. The heavier elements, carbon to sulfur, show a small tendency for intensity enhancement in the relative abundance obove 10 TeV/amu.


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    Titel :

    Direct measurement of the composition and spectra of cosmic rays above 1 TeV/amu from JACEE


    Beteiligte:
    Parnell, T. A. (Autor:in) / Derrickson, J. H. (Autor:in) / Fountain, W. F. (Autor:in) / Burnett, T. H. (Autor:in) / Dake, S. (Autor:in) / Jones, W. V. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.01.1989



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Direct measurement of the composition and spectra of cosmic rays above 1 TeV/amu from Jacee

    Parnell, T.A. / Burnett, T.H. / Dake, S. et al. | Elsevier | 1989



    Chemical Composition of Relativistic Cosmic Rays Detected Above the Atmosphere

    N. Durgaprasad / C. E. Fichtel / D. E. Guss et al. | NTIS | 1969



    Composition of Solar cosmic rays

    Fichtel, C. E. | NTRS | 1962