Cosmic ray antiproton and positron production in the interstellar medium

Details Cosmic ray antiproton and positron production in the interstellar medium Cosmic ray antiproton and positron production in the interstellar medium

Oct 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975ap%26ss..37..283b&link_type=abstract

Astrophysics and Space Science, vol. 37, Oct. 1975, p. 283-300.

Astronomy and Astrophysics

Astrophysics

28

Antiprotons, Energy Spectra, Interstellar Radiation, Particle Production, Positrons, Secondary Cosmic Rays, Astronomical Models, Graphs (Charts), Nuclear Interactions, Pions

Scientific paper

We have calculated the energy spectra of cosmic ray secondary antiprotons and positrons using the latest available data on inclusive reactions. Using the measured positron spectrum, we have found that the amount of matter traversed by the cosmic rays in the few GeV region to be 4.7 (+ or - 1.5) g/sq cm of interstellar hydrogen. The computed antiproton to proton ratio is about .0004 for energies 5-10 GeV. This is sufficient to make observations of antiprotons feasible from balloon flights. We have also pointed out the type of information that can be obtained if accurate information of the spectra of these two components becomes available.

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