Production mechanism of new neutron-rich heavy nuclei in the Xe136+198Pt reaction

• Main Authors: Cheng Li, Peiwei Wen, Jingjing Li, Gen Zhang, Bing Li, Xinxin Xu, Zhong Liu, Shaofei Zhu, Feng-Shou Zhang
• Format: Article
• Language: English
• Published: Elsevier 2018-01-01
• Series: Physics Letters B
• Online Access: http://www.sciencedirect.com/science/article/pii/S0370269317309528
• ISSN: 0370-2693; 1873-2445

The multinucleon transfer reaction of Xe136+198Pt at Elab=7.98 MeV/nucleon is 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 199Pt, 203Pt, and 208Pt 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∘–60∘ and 100–200 MeV, respectively.