High Energy Galactic Cosmic Rays Observed by RUNJOB Experiment

Details High Energy Galactic Cosmic Rays Observed by RUNJOB Experiment High Energy Galactic Cosmic Rays Observed by RUNJOB Experiment

Mar 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006jphcs..31..159h&link_type=abstract

Journal of Physics: Conference Series, Volume 31, Issue 1, pp. 159-160 (2006).

Physics

1

Scientific paper

Galactic cosmic rays (GCRs) from proton to iron with the energy of 1013 - 1015 eV were observed by RUssia-Nippon JOint Balloon (RUNJOB) experiments. Each energy spectrum of the primary nuclear components except for helium is in agreement with the results obtained by other observations in the same energy region as the RUNJOB observation within statistical errors, while the intensity of the helium component is nearly half that obtained by the JACEE and the SOKOL observations. The spectrum slopes seem to be almost parallel or become gradually harder as mass becomes heavier. The power indices of the spectra are nearly -2.75 in the energy range of 20 - 500 TeV/nucleous. These our results support the acceleration mechanism and the propagation process in Galaxy of GCRs depend on its rigidity.

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