Journal
NUCLEAR SCIENCE AND TECHNIQUES
Volume 32, Issue 10, Pages -Publisher
SPRINGER SINGAPORE PTE LTD
DOI: 10.1007/s41365-021-00946-3
Keywords
Dinuclear system model; Fusion-evaporation reactions; Superheavy nuclei; Cross sections
Categories
Funding
- National Natural Science Foundation of China [12175072, 11722546]
- Talent Program of South China University of Technology
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The fusion dynamics of the formation of superheavy nuclei were thoroughly investigated within a dinuclear system model. The Monte Carlo approach was implemented to include all possible orientations in the nucleon transfer process. Calculations of production cross sections of superheavy nuclei showed a sensitivity to the neutron richness of the reaction system.
The fusion dynamics of the formation of superheavy nuclei were investigated thoroughly within the dinuclear system model. The Monte Carlo approach was implemented in the nucleon transfer process to include all possible orientations, at which the dinuclear system is assumed to be formed at the touching configuration of dinuclear fragments. The production cross sections of superheavy nuclei Cn, Fl, Lv, Ts, and Og were calculated and compared with the available data from Dubna. The evaporation residue excitation functions in the channels of pure neutrons and charged particles were systematically analyzed. The combinations of Sc-44, Ti-48;50, V-49;51, Cr-52;54, Fe-58;62, and N-62;64(i) bombarding the actinide nuclides U-238, Pu-244, Cm-248, Bk-247;249, Cf-249;251, Es-252, and Am-243 were calculated to produce the superheavy elements with Z = 119 - 122. We obtained that the production cross sections sensitively depend on the neutron richness of the reaction system. The structure of the evaporation residue excitation function is related to the neutron separation energy and fission barrier of the compound nucleus.
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