Isotope yield ratios of fragments from heavy-ion reactions

Abstract
Isotope yield ratios produced in collisions of 35 MeV/nucleon N14 with targets of C, Ni, Ag, and Ho have an exponential dependence on total neutron-to-proton ratio. A statistical multifragmentation model including particle emission from excited fragments predicted such behavior for yield ratios measured earlier at the higher energy of 84 MeV/nucleon.