A Multi-Component Measurement of the Cosmic Ray Composition Between 10^{17} eV and 10^{18} eV
Astrophysics
2008-11-26 v1
Abstract
The average mass composition of cosmic rays with primary energies between eV and 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 in the change in the muon density at a fixed core location, , as a function of energy. The composition has also been evaluated in terms of the combination of and . The results show that the composition is changing from a heavy to lighter mix as the energy increases.
Cite
@article{arxiv.astro-ph/9911144,
title = {A Multi-Component Measurement of the Cosmic Ray Composition Between 10^{17} eV and 10^{18} eV},
author = {T. Abu-Zayyad and K. Belov and D. J. Bird and J. Boyer and Z. Cao and M. Catanese and G. F. Chen and R. W. Clay and C. E. Covault and J. W. Cronin and H. Y. Dai and B. R. Dawson and J. W. Elbert and B. E. Fick and L. F. Fortson and J. W. Fowler and K. G. Gibbs and M. A. K. Glasmacher and K. D. Green and Y. Ho and A. Huang and C. C. Jui and M. J. Kidd and D. B. Kieda and B. C. Knapp and S. Ko and C. G. Larsen and W. Lee and E. C. Loh and E. J. Mannel and J. Matthews and J. N. Matthews and B. J. Newport and D. F. Nitz and R. A. Ong and K. M. Simpson and J. D. Smith and D. Sinclair and P. Sokolsky and P. Sommers and C. Song and J. K. K. Tang and S. B. Thomas and J. C. van der Velde and L. R. Wiencke and C. R. Wilkinson and S. Yoshida and X. Z. Zhang},
journal= {arXiv preprint arXiv:astro-ph/9911144},
year = {2008}
}
Comments
14 pages including 3 figures in revtex epsf style, submited to PRL