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Within the framework of the dinuclear system model, the production mechanismof neutron-rich heavy nuclei around N = 162 has been investigatedsystematically. The isotopic yields in the multinucleon transfer reaction of$^{238}$U + $^{248}$Cm was analyzed and compared the available experimentaldata. Systematics on the production of superheavy nuclei via $^{238}$U on$^{252,254}$Cf, $^{254}$Es and $^{257}$Fm is investigated. It is found that theshell effect is of importance in the formation of neutron-rich nuclei aroundN=162 owing to the enhancement of fission barrier. The fragments in themultinucleon transfer reactions manifest the broad isotopic distribution andare dependent on the beam energy. The polar angles of the fragments tend to theforward emission with increasing the beam energy. The production cross sectionsof new isotopes are estimated and heavier targets are available for theneutron-rich superheavy nucleus formation. The optimal system and beam energyare proposed for the future experimental measurements.

Production of neutron-rich heavy nuclei around N = 162 in multinucleon transfer reactions