Cosmic Ray Proton and Helium Spectra -- Results from the JACEE Experiment

Details Cosmic Ray Proton and Helium Spectra -- Results from the JACEE Experiment Cosmic Ray Proton and Helium Spectra -- Results from the JACEE Experiment

Apr 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aps..apr.f1208c&link_type=abstract

American Physical Society, APS/AAPT Joint Meeting, April 18-21, 1997, abstract #F12.08

Physics

Scientific paper

Measurements are presented of the cosmic ray hydrogen and helium spectra at energies from 2 to 800 TeV. The experiments were performed on a series of twelve balloon flights, including several long duration Australia-to-South America and Antarctic circumpolar flights. Both the hydrogen and helium spectra are consistent with power laws, with integral spectral indices 1.72 ± 0.10 and 1.56 ± 0.06 for the protons and helium respectively. The results are fully consistent with expectations based on supernova shock acceleration coupled with a leaky box model of propagation through the Galaxy.

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