Considered 481 isotopes in this work as a function of neutron number N and proton number Z. Here it is assumed that the heaviest stable injection isotope is ⁵⁶Fe. The color-coding refers to the most abundant stable isotopes (for each element, i.e., equal Z), which are considered as injection isotopes (dark blue), stable isotopes (blue), β^± emitters (dark red), possibly followed by the spontaneous emission of nucleons (light red), and spontaneous emitters of nucleons or α particles (white). We note that only the leading (largest branching ratio) processes are shown, and that isotopes with lifetimes longer than one month are regarded as stable in our scheme. Isotopes with rest frame lifetimes τ₀ ≤ 10⁻⁵ s are marked by “×”, which are potentially interesting for neutrino production in GRBs if they are β^± emitters. Isotopes with rest frame lifetimes τ₀ ≤ 10⁻¹⁰ s (or unknown lifetimes) are marked by dots, which decay quickly enough even at the highest energies to be integrated out.