Statistical evolution of isotope composition of nuclear fragments - art. no. 061601

Calculations within the statistical multifragmentation model show that the neutron content of intermediate mass fragments can increase in the region o f the liquid-gas phase transition in finite nuclei. The model predicts also inhomogeneous distributions of fragments and of their isospin in the freez e-out volume caused by angular momentum and an external long-range Coulomb field. These effects can take place in peripheral nucleus-nucleus collision s at intermediate energies and lead to neutron-rich isotopes produced in th e midrapidity kinematic region.