Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...157..223d&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 157, no. 2, March 1986, p. 223-229.
Astronomy and Astrophysics
Astronomy
219
Galactic Radiation, Gamma Ray Astronomy, Mesons, Particle Collisions, Proton Scattering, Proton-Proton Reactions, Astronomical Models, Background Radiation, Energy Spectra, Galactic Cosmic Rays, Scaling Laws, Spectrum Analysis
Scientific paper
Accelerator data is used to compare isobaric and scaling model predictions of the secondary spectra of neutral pi-mesons produced in proton-proton collisions at energies between threshold and a few GeV. The isobaric model is found superior, and is used in conjunction with a scaling model representation at high energies to recalculate the contribution of the π0 γ-radiation to the diffuse galactic γ background. Cosmic ray-induced π0 production of photons with energies greater than 100 MeV proceeds at a rate of 1.53×10-25 photons/(s - H atom), with an uncertainty of less than 15% associated with the strong interaction data. Comparison of the results is made with previous calculations of this process and with COS-B observations of the diffuse galactic γ radiation.
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