The production cross sections of new neutron-rich ${}^{84,86}\mathrm{Zn}$ and ${}^{90,92}\mathrm{Ge}$ isotopes beyond $N=50$ are estimated for the first time in the multinucleon transfer reactions ${}^{48}\mathrm{Ca}$ $+$ ${}^{238}\mathrm{U}$ and ${}^{48}\mathrm{Ca}$ $+$ ${}^{244}\mathrm{Pu}$. The production of new isotopes in reactions with a ${}^{48}\mathrm{Ca}$ beam is discussed for future experiments.

• Received 19 August 2009

DOI:https://doi.org/10.1103/PhysRevC.81.024604