Fusion hindrance for asymmetric systems at deep sub-barrier energies

The phenomenon of fusion hindrance, observed initially in symmetric systems involving medium-heavy nuclei at deep sub-barrier energies, has inspired current activities related to challenging low cross-section measurements. Theoretical models suggested to explain this behavior have different physical basis. The sudden model proposed by Misicu takes into account the nuclear incompressibility when the two nuclei overlap by including a repulsive core to density folded potential