H. S. Ahn, et al. (CREAM Collaboration), "Measurements of Cosmic-Ray Secondary Nuclei at High Energies with the First Flight of the CREAM Balloon-Borne Experiment," Astropart. Phys. 30, 133 – 141 (2008)

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 I TeV/n. The data agree with previous measurements at lower energies and show a relatively steep decline (similar to E-0.6 to E-0.5) at high energies. They further show the source abundance of nitrogen relative to oxygen is similar to 10% in the TeV/n region. (C) 2008 Elsevier B.V. All rights reserved.