Measurements of cosmic-ray secondary nuclei at high energies with the first flight of the CREAM balloon-borne experiment

H. S. Ahn, P. S. Allison, M. G. Bagliesi, J. J. Beatty, G. Bigongiari, P. J. Boyle, T. J. Brandt, J. T. Childers, N. B. Conklin, S. Coutu, M. A. Duvernois, O. Ganel, J. H. Han, H. J. Hyun, J. A. Jeon, K. C. Kim, J. K. Lee, M. H. Lee, L. Lutz, P. MaestroA. Malinin, P. S. Marrocchesi, S. A. Minnick, S. I. Mognet, S. Nam, S. L. Nutter, I. H. Park, N. H. Park, E. S. Seo, R. Sina, S. P. Swordy, S. P. Wakely, J. Wu, J. Yang, Y. S. Yoon, R. Zei, S. Y. Zinn

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Abstract

We present new measurements of heavy cosmic-ray nuclei at high energies performed during the first flight of the balloon-borne cosmic-ray experiment Cosmic-Ray Energetics and Mass (CREAM). This instrument uses multiple charge detectors and a transition radiation detector to provide the first high accuracy measurements of the relative abundances of elements from boron to oxygen up to energies around 1 TeV/n. The data agree with previous measurements at lower energies and show a relatively steep decline (∼E-0.6 to E-0.5) at high energies. They further show the source abundance of nitrogen relative to oxygen is ∼10% in the TeV/n region.

Original languageEnglish (US)
Pages (from-to)133-141
Number of pages9
JournalAstroparticle Physics
Volume30
Issue number3
DOIs
StatePublished - Oct 1 2008

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All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics

Cite this

Ahn, H. S., Allison, P. S., Bagliesi, M. G., Beatty, J. J., Bigongiari, G., Boyle, P. J., Brandt, T. J., Childers, J. T., Conklin, N. B., Coutu, S., Duvernois, M. A., Ganel, O., Han, J. H., Hyun, H. J., Jeon, J. A., Kim, K. C., Lee, J. K., Lee, M. H., Lutz, L., ... Zinn, S. Y. (2008). Measurements of cosmic-ray secondary nuclei at high energies with the first flight of the CREAM balloon-borne experiment. Astroparticle Physics, 30(3), 133-141. https://doi.org/10.1016/j.astropartphys.2008.07.010