1999/11/15 by G. Domokos, Domokos, G., S. Kovesi-Domokos +2
Computer Science · Physics and Astronomy · #Astrophysics (astro-ph) #Computational Physics and Python Applications #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Scientific Research and Discoveries #astro-ph #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9911363
11 pages, no figures, LaTeX2e
arxiv created 1999/11/15 · openalex publication_date 1999/11/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Ultrahigh energy protons in magnetic fields produce pions and thus lose energy. The mean free path of such a process is worked out for Gaussian random fields. Two cases are considered: an isotropic and a cylindrically symmetric distribution. The energy loss is proportional to E3 <b>; it becomes significant for protons of energies larger than about 1019 eV and magnetic fields of about 109 Gauss. For energies and magnetic fields of this magnitude, a proton injected into the magnetic field loses a substantial fraction of its initial energy due to pion production.</b>