2008/08/12 by H. S. Ahn, P. Allison, P. S. Allison +40 · 13 citations
Medicine · Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Particle Detector Development and Performance #Radiation Therapy and Dosimetry #astro-ph
paper · pdf · doi:10.1016/j.astropartphys.2008.07.010
published as Astropart. Phys. 30 (2008) 133-141 · Accepted for publication in Astroparticle Physics
arxiv created 2008/08/12 · openalex publication_date 2008/09/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present new measurements of heavy cosmic-ray nuclei at high energies per- formed during the first flight of the balloon-borne cosmic-ray experiment CREAM (Cosmic-Ray Energetics And Mass). 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.