Cosmic ray proton spectra at low rigidities

Details Cosmic ray proton spectra at low rigidities Cosmic ray proton spectra at low rigidities

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icrc....3....7s&link_type=abstract

Proceedings of the 21st International Cosmic Ray Conference. Volume 3 (OG Sessions), p.7

Physics

Antiprotons, Balloon-Borne Instruments, Cosmic Rays, Energy Spectra, Helium, Proton Energy, Scintillation, Superconducting Magnets

Scientific paper

The cosmic ray proton rigidity spectra have been investigated with data collected in the Low Energy Antiproton (LEAP) balloon flight experiment flown from Prince Albert, Canada in 1987. The LEAP apparatus was designed to measure antiprotons using a superconducting magnet spectrometer with ancillary scintillator, time-of-flight, and liquid Cherenkov detectors. After reaching float altitude the balloon drifted south and west to higher geomagnetic cutoffs. The effect of the changing geomagnetic cutoff on the observed spectra was observed during analysis of the proton data along the balloon trajectory. This is the first measurement of the primary and splash albedo spectra over a wide rigidity range (few hundred MV to about 100 GV) with a single instrument.

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