P-nuclei and other secondary isotopes from heavy-ion spallation in Quark-Novae

This paper shows that the collision of the ejecta of an exploding neutron star (the Quark-Nova or QN) with the preceding Type II Supernova (SNII) ejecta synthesizes p-nuclei, r-process-like and s-process-like isotopes. The QN ejecta, rich in A>130A>130 r-process isotopes, spallates against the 56Ni nuclei in the inner supernova ejecta, producing secondary nuclides in the A>130A>130 and A<130A<130 mass ranges. This secondary nuclide yield includes r-process-like and s-process-like isotopes, and all 35 p-nuclei. This model suggests that heavy-ion spallation, in the context of a QN-SNII interaction (dual-shock Quark-Nova or dsQN), could play a role in heavy-isotope nucleosynthesis as a secondary process.