Statistical evolution of isotope composition of nuclear fragments
  Calculations within the statistical multifragmentation model show that the neutron content of intermediate mass fragments can increase in the region of liquid-gas phase transition in finite nuclei. The model predicts also inhomogeneous distributions of fragments and their isospin in the freeze-out volume caused by an angular momentum and external long-range Coulomb field. These effects can take place in peripheral nucleus-nucleus collisions at intermediate energies and lead to neutron-rich isotopes produced in the midrapidity kinematic region. 
A.S. Botvina (GSI, Darmstadt, Germany and Institute for Nuclear   Research, Moscow, Russia), I.N. Mishustin (Niels Bohr Inst...