Photoprotons from Medium Weight Nuclei (50≲ A ≲ 125) and a Mechanism for the Decay of Excited Nuclei in the Giant Dipole Resonance Region

Simulation of $^{67}$Cu photo-nuclear production in nanoparticles

“…The shape of the calculated spectrum has essential differences from the evaporation model, namely the amount of high-energy recoil nuclei (and corresponding high-energy protons) is significantly higher. This agrees with the results of the experimental studies [16]; the increased fraction of high-energy recoils could be attributed to the direct photo-nuclear reactions.…”

“…To simulate 68 Zn(γ, p) 67 Cu reaction we generated 67 Cu ions at random points inside the nanoparticle volume, and the energy of the generated ions was sampled from the recoil energy spectra calculated using Talys code (see section II A). Experimental data on photoproton reaction on zinc shows weak anisotropy in the angular distribution of the reaction products [16], however during our simulations we neglected it and momentum direction of the generated 67 Cu ions was sampled isotropically. During simulation 10 6 initial 67 Cu nuclei were generated to achieve the reasonable statistics of the calculated values.…”