Published 1995 | Version Published
Book Section - Chapter Open

Cosmic Ray Antiproton Observations from 0.2 to 3.2 GeV

Abstract

The Isotope Matter Antimatter Experiment (IMAX) has detected 16 antiprotons, in the energy range from 0.2 to 3.2 GeV. This result provides significant improvement in statistical accuracy over previous cosmic ray antiproton measurements in the same energy range. This measurement has been corrected for instrumental and atmospheric losses, yielding top-of-the-atmosphere antiproton to proton ratios in three energy intervals. These results are consistent with recent theoretical predictions in which antiprotons are produced as secondary cosmic rays and are transported through the galaxy according to the standard Leaky Box model.

Additional Information

© IUPAP. Provided by the NASA Astrophysics Data System. This research was supported in part by NASA grant NAGW-1919. One of us (AWL) thanks the NASA Graduate Student Researchers Program for its support. The IMAX team is grateful to the NSBF for a successful balloon flight.

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Eprint ID
46316
Resolver ID
CaltechAUTHORS:20140617-162911825

Funding

NASA
NAGW-1919
NASA Graduate Student Researchers Program

Dates

Created
2014-07-07
Created from EPrint's datestamp field
Updated
2020-03-09
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Caltech Custom Metadata

Caltech groups
Space Radiation Laboratory
Other Numbering System Name
Space Radiation Laboratory
Other Numbering System Identifier
1995-25