  We studied the production of neutron-rich nuclides in multinucleon transfer
collisions of stable and radioactive beams in the mass range A=40-60. We first
presented our experimental cross section data of projectile fragments from the
reaction of 40Ar(15 MeV/nucleon) with 64Ni, 58Ni and 27Al. We then compared
them with calculations based on either the deep-inelastic transfer (DIT) model
or the constrained molecular dynamics (CoMD) model, followed by the statistical
multifragmentation model (SMM). An overall good agreement of the calculations
with the experimental data is obtained. We continued with calculations of the
reaction of 40Ar (15 MeV/nucleon) with 238U target and then with reactions of
48Ca (15 MeV/nucleon) with 64Ni and 238U targets. In these reactions,
neutron-rich rare isotopes with large cross sections are produced. These
nuclides, in turn, can be assumed to form radioactive beams and interact with a
subsequent target (preferably 238U), leading to the production of extremely
neutron-rich and even new isotopes (e.g. 60Ca) in this mass range. We conclude
that multinucleon transfer reactions with stable or radioactive beams at the
energy of around 15 MeV/nucleon offer an effective route to access extremely
neutron-rich rare isotopes for nuclear structure or reaction studies.
