Isotopic compositions in projectile fragmentation at Fermi energies

We have investigated the Coulomb proximity and angular momentum effects on multifragmentation picture in peripheral heavy ion reactions at Fermi energies 1 We have reproduced isotopic distributions and the mean neutron to proton ratios of the fragments according to their velocities on the basis of microcanonical Markov chain statistical multifragmentation model and compared with experimental data 2 We have found that the effect of angular momentum plays a robust role for isotopic compositions on multifragmentation picture at Fermi energies This kind of investigations may provide us with inputs to understand the nuclear equation of state and nuclear composition which are important to determine the properties of nuclear and stellar matter at extreme conditions and their connections to the thermodynamics of stellar matter and astrophysical events