Fig. 5
Energy distribution of secondary positrons for incident proton energies Tp ≈ 0.3 and 0.6 GeV. The histograms are obtained from simulations using the Geant4 tools, while the red lines correspond to parametrisations for π-meson production given by Eq. (A.1) of Appendix A. The grey long dashed line is calculated using the parametrisation of Kamae et al. (2006) for Tp ≈ 0.6 GeV.
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