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Nuclear enhancement factor in calculation of Galactic diffuse gamma-rays: A new estimate with DPMJET-3

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arxiv 0903.3260 v2 pith:YHRM5HCI submitted 2009-03-19 astro-ph.HE

Nuclear enhancement factor in calculation of Galactic diffuse gamma-rays: A new estimate with DPMJET-3

classification astro-ph.HE
keywords calculationdiffusedpmjet-3energyenhancementfactorgalacticnuclear
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A new calculation of nuclear enhancement factor, used in estimation of Galactic diffuse gamma-ray flux from proton-proton interaction in order to take account of heavy nuclei included in cosmic-rays and interstellar matter, is presented by use of a Monte Carlo simulator, DPMJET-3. A new value of 1.8-2.0 in the energy range of 6-1000 GeV/nucleon, slightly increasing with kinetic energy of projectile cosmic rays, is about 20% larger than previous estimates.

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