Evidence for changing of cosmic ray composition between 10(17) and 10(18) eV from multicomponent measurements
- Abu-Zayyad, T.
- Belov, K.
- Bird, D.
- Boyer, J.
- Cao, Z.
- Catanese, M.
- Chen, G.
- Clay, R.
- Covault, C.
- Cronin, J.
- Dai, H.
- Dawson, B.
- Elbert, J.
- Fick, B.
- Fortson, L.
- Fowler, J.
- Gibbs, K.
- Glasmacher, M.
- Green, K.
- Ho, Y.
- et al.
Publication date
January 2000
DOI Publisher
American Physical Society (APS) ISSN
0031-9007 Journal
Physical Review LettersAbstract
An erratum exists for this article. Please see the description link below for details.The average mass composition of cosmic rays with primary energies between 10¹⁷ and 10¹⁸ eV has been studied using a hybrid detector consisting of the High Resolution Fly’s Eye (HiRes) prototype and the MIA muon array. Measurements have been made of the change in the depth of shower maximum and the muon density as a function of energy. The results show that the composition is changing from a heavy to lighter mix as the energy increases.T. Abu-Zayyad...D. J. Bird...R.W. Clay...B. R. Dawson...K. M. Simpson...C. R. Wilkinson...et al
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