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Fusion and quasi-fission dynamics in nearly-symmetric reactions

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  • Nuclear Physics
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Abstract

Some nearly-symmetric fusion reactions are systematically investigated with the improved quantum molecular dynamics (ImQMD) model. By introducing two-body inelastic scattering in the Fermi constraint procedure, the stability of an individual nucleus and the description of fusion cross sections at energies near the Coulomb barrier can be further improved. Simultaneously, the quasifission process in 154Sm+160Gd is also investigated with the microscopic dynamics model for the first time. We find that at energies above the Bass barrier, the fusion probability is smaller than 10-5 for this reaction, and the nuclear contact time is generally smaller than 1500 fm/c. From the central collisions of Sm+Gd, the neutron-rich fragments such as 164,165Gd, 192W can be produced in the ImQMD simulations, which implies that the quasi-fission reaction could be an alternative way to synthesize new neutron-rich heavy nuclei.

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Authors and Affiliations

  1. Department of Physics, Guangxi Normal University, Guilin, 541004, China

    Ning Wang

  2. State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, China

    Ning Wang

  3. China Institute of Atomic Energy, Beijing, 102413, China

    Kai Zhao & ZhuXia Li

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  1. Ning Wang
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  2. Kai Zhao
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Correspondence to Ning Wang.

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Wang, N., Zhao, K. & Li, Z. Fusion and quasi-fission dynamics in nearly-symmetric reactions. Sci. China Phys. Mech. Astron. 58, 112001 (2015). https://doi.org/10.1007/s11433-015-5726-z

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