Dynamical deformation of nuclei in deep-inelastic collisions: A gamma coincidence study of 130Te+275 MeV 64Ni and 208Pb+345 MeV 58Ni heavy ion reactions

Products of Te-130 + 275 MeV Ni-64 and Pb-208 + 345 MeV Ni-58 collisions at energies slightly above the Coulomb harrier have been studied in two gamma spectroscopy thick target experiments The product yield distributions have been established from the gamma-gamma coincidence analysis Supplemented by target radioactivity measurements Neutron evaporation front excited primary products has been estimated to determine the pre-emission maps of fragments The transfer of protons and neutrons between the colliding tons is discussed in terms of the N/Z ratio equilibration The discussion of expeximental N/Z values compared with expectations based on potential energy minimizations leads to conclusion that the involved nuclei are dynamically deformed during the crucial interaction time These results are discussed in connection with the earlier published Study of the Pb-208 + 350 MeV Ni-64 system [1] The present and perspective use of deep-inelastic reactions for spectroscopic Studies of exotic neutron-rich nuclei in experiments with stable and radioactive beams is Outlined (C) 2009 Elsevier B V All rights reserved