Multiple-models predictions for drip line nuclides in projectile fragmentation of ^40,48 Ca, ^58,64 Ni, and ^78,86 Kr at 140 MeV/u

Modern rare isotope beam (RIB) factories will significantly enhance the production of extremely rare isotopes (ERI) at or near drip lines. As one of the most important methods employed in RIB factories, the production of ERIs in projectile fragmentation reactions should be theoretically improved to provide better guidance for experimental research. The cross-sections of ERIs produced in 140 MeV/u ^78,86 Kr/ ^58,64 Ni/ ^40,48 Ca + ^9 Be projectile fragmentation reactions were predicted using the newly proposed models [i.e., Bayesian neural network (BNN), BNN + FRACS, and FRACS, see Chin. Phys. C, 46: 074104 (2022)] and the frequently used EPAX3 model. With a minimum cross-section of 10^-15 mb, the possibilities of ERIs discovery in a new facility for rare isotope beams (FRIB) are discussed.