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

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

2008-08-12

arxiv.org/abs/0808.1718v1

Astropart. Phys. 30 (2008) 133-141

Astronomy and Astrophysics

Astrophysics

Accepted for publication in Astroparticle Physics

Scientific paper

10.1016/j.astropartphys.2008.07.

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.

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