Production mechanism of new neutron-rich heavy nuclei inthe 136Xe+198Pt reaction

The multinucleon transfer reaction of Xe-136 + Pt-198 at E-lab = 7.98 MeV/nucleonis investigated by using the improved quantum molecular dynamics model. The quasielastic, deep-inelastic, and quasifission collision mechanisms are studied via analyzing the angular distributions of fragments and the energy dissipation processes during the collisions. The measured isotope production cross sections of projectile-like fragments are reasonably well reproduced by the calculation of the ImQMD model together with the GEMINI code. The isotope production cross sections for the target-like fragments and double differential cross sections of Pt-199, Pt-203, and Pt-208 are calculated. It is shown that about 50 new neutron-rich heavy nuclei can be produced via deep-inelastic collision mechanism, where the production cross sections are from 10(-3) to 10(-6) mb. The corresponding emission angle and the kinetic energy for these new neutron-rich nuclei locate at 40 degrees-60 degrees and 100-200 MeV, respectively. (c) 2017 The Authors. Published by Elsevier B.V.