Photon and helium energy spectra above 1 TeV for primary cosmic rays

Details Photon and helium energy spectra above 1 TeV for primary cosmic rays Photon and helium energy spectra above 1 TeV for primary cosmic rays

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983phrvl..51.1010b&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 51, Sept. 12, 1983, p. 1010-1013. Research supported by the U.S. Department of En

Physics

53

Energy Spectra, Helium, Primary Cosmic Rays, Protons, Calorimeters, International Cooperation, Nuclear Emulsions

Scientific paper

Energy spectra of protons and helium nuclei in primary cosmic rays were measured above 1 TeV in a series of balloon flights carrying emulsion chambers. Differential spectra may be represented by power laws of indices -2.81 + or - 0.13 and -2.83 + or - 0.20 for protons and He, respectively. No index change was observed for either species over the energy ranges 5-500 TeV for protons and 2-50 TeV/nucleon for He. Intensities were consistent with extrapolations of previously published data below 1 TeV/nucleon.

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