Primary cosmic ray spectra observed by RUNJOB --- spectra for heavy and all particles

Details Primary cosmic ray spectra observed by RUNJOB --- spectra for heavy and all particles Primary cosmic ray spectra observed by RUNJOB --- spectra for heavy and all particles

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999icrc....3..167r&link_type=abstract

Proceedings of the 26th International Cosmic Ray Conference. August 17-25, 1999. Salt Lake City, Utah, USA. Under the auspices o

Physics

Scientific paper

The absolute fluxes of heavy cosmic ray primaries, CNO, Ne Mg Si groups and Fe comp onents are reported from RUssian Nipp on JOint Balloon (RUNJOB) experiment. Total exposure of RUNJOB turns out to b e 342.4 m2 hour at the average altitude of around 30 km in three campaigns in 1995, 1996 and 1997. Using the angular distribution of the fragments nuclei and secondary particles, and the darkness on X-ray films, the energy of the primary particle is estimated. The flux of Fe comp onent extends up to 5*1012 eV/nucleon. And summing up the observed sp ectra, we got the all particle sp ectrum up to 1015 eV/particle. Combining with OG.1.2.14 of this conference, this paer will be the full explanation of RUNJOB experiment.

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