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Published 1995 | Published
Book Section - Chapter Open

Cosmic Ray Antiproton Observations by the Isotope Matter-Antimatter Experiment; 0.2 to 3.2 GeV

Abstract

We have positively identified sixteen mass-resolved cosmic ray anti.protons with energies between 0.2 and 3.2 GeV using the IMAX balloon-borne magnetic spectrometer. Mass was determined by velocity vs. magnetic rigidity techniques using a high resolution time-of-flight system and silica-aerogel Cherenkov detectors. The anti.protons are clearly separated from the low-mass particle background. Here the measurement technique, data analysis, and resulting proton and antiproton mass histograms are presented.

Additional Information

© IUPAP. Provided by the NASA Astrophysics Data System. IMAX was supported in the United States by NASA and in Germany by DFG and BMFT. We thank NSBF, and the technical staffs of GSFC, Caltech, and the University of Siegen.

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