Abstract
The mechanism of multinucleon transfer (MNT) reactions for producing neutron-rich heavy nuclei around N=126 is investigated within two different theoretical frameworks: dinuclear system (DNS) model and isospin-dependent quantum molecular dynamics (IQMD) model. The effects of mass asymmetry relaxation, N/Z equilibration, and shell closures on production cross sections of neutron-rich heavy nuclei are investigated. For the first time, the advantages for producing neutron-rich heavy nuclei around N=126 are found in MNT reactions based on 238U target. We propose the MNT reactions with 238U target for producing unknown neutron-rich heavy nuclei around N=126 in the future.
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