Production of neutron-rich actinide isotopes in isobaric collisions via multinucleon transfer

分类： 物理学 >> 核物理学 提交时间： 2023-06-20

Peng-Hui, Chen Chang, Geng Zu-Xing Yang Xiang-Hua Zeng Zhao-Qing Feng

摘要： We have calculated the multinucleon transfer reactions of 208Os, 208Pt, 208Hg, 208Pb,208Po, 208Rn, 208Ra,132,136Xe bombarding on 232Th and 248Cm at Coulomb barrier energies within the dinuclear system model, systematically. The results are in good agreement with the available experimental data. The Coulomb effect and shell effect on the production of actinides in these reactions have been investigated thoroughly. Potential energy surface and total kinetic energy mass distributions in the reactions 208Hg, 208Pb and208Po colliding on 248Cm and 232Th are calculated and analyzed, respectively. It is found that PES and TKE spectra manifest the fragment formation mechanism in the multinucleon transfer reactions. The isospin effect and shell effect are shown in PES and TKE. Production cross-sections of multinucleon transfer products are highly dependent on the isobar projectiles with the mass number A = 208. The isobar projectiles with larger N/Z ratios are favorable for creating neutron-rich target-like fragments. The isobar projectiles with larger charge number induced products tend to shift to proton-rich regions. Coulomb potential coupled with the shell effect is shown in production cross-sections of actinide isotopes. Based on the radioactive projectiles induced reactions, we have predicted massive new actinide isotopes around nuclear drip lines, even could access the superheavy nuclei region.

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