The Production of Cosmic Gamma Rays in Interstellar and Intergalactic Cosmic-Ray Collisions. Iii: the from of the Cosmic Gamma-Ray Source Spectrum from p-p Interactions for Gamma-Ray Energies Less than 1 GeV

Details The Production of Cosmic Gamma Rays in Interstellar and Intergalactic Cosmic-Ray Collisions. Iii: the from of the Cosmic Gamma-Ray Source Spectrum from p-p Interactions for Gamma-Ray Energies Less than 1 GeV The Production of Cosmic Gamma Rays in Interstellar and Intergalactic Cosmic-Ray Collisions. Iii: the from of the Cosmic Gamma-Ray Source Spectrum from p-p Interactions for Gamma-Ray Energies Less than 1 GeV

Dec 1967

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1967saosr.260.....s&link_type=abstract

SAO Special Report #260 (1967)

Computer Science

7

Scientific paper

The cosmic gamma-ray spectrum below 1 GeV arising from p-p interactions is calculated. Its properties are determined by the properties of the secondary neutral pion production occuring at accelerator energies. First, a detailed discussion of the general properties of gamma-ray spectra arising from neutral pion decay is given. A determination is made of the various features of such spectra that must, in general, hold true. This discussion includes the results of analytic calculations of normalized gamma-ray spectra from ideal neutral pion energy distributions. An "isobar-plus-fireball" model is then chosen for numerical calculations in which the two dominant models of neutral pion production at accelerator energies are production of the N*3/2 (1.237) isobar and one fireball. Each of these modes of production then yields a component to the total gamma-ray spectrum. The components are summed and the results are given in terms of integral and differential gamma-ray spectra. A comparison is made with recent balloon data of gamma rays resulting from atmospheric high-energy interactions, and good agreement is found.

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