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

作　　者：Peng-Hui Chen Chang Geng Zu-Xing Yang Xiang-Hua Zeng Zhao-Qing Feng 

机构地区：[1]School of Physical Science and Technology,Yangzhou University,Yangzhou 225009,China [2]RIKEN Nishina Center,Wako,Saitama 351‑0198,Japan [3]College of Electrical,Power and Energy Engineering,Yangzhou University,Yangzhou 225009,China [4]School of Physics and Optoelectronics,South China University of Technology,Guangzhou 510641,China

出　　处：《Nuclear Science and Techniques》2023年第10期166-177,共12页核技术（英文）

基　　金：supported by National Natural Science Foundation of China (Nos. 12105241, 12175072);Natural Science Foundation of Jiangsu Province (No. BK20210788);Jiangsu Provincial Double-Innovation Doctoral Program (No. JSSCBS20211013);University Science Research Project of Jiangsu Province (No. 21KJB140026);Lv Yang Jin Feng (No. YZLYJFJH2021YXBS130);Key Laboratory of High-Precision Nuclear Spectroscopy,Institute of Modern Physics,Chinese Academy of Sciences (No. IMPKFKT2021001)。

摘　　要：We systematically calculated the multinucleon transfer reactions of ^(208)Os,^(208)Pt,^(208)Hg,^(208)Pb,^(208)Po,^(208)Rn,^(208)Ra,and ^(132,136) Xe when bombarded on ^(232) Th and ^(248) Cm at Coulomb barrier energies within the dinuclear system model.These results are in good agreement with the available experimental data.The influence of Coulomb and shell effects on actinide production in these reactions has been rigorously studied.We calculated and analyzed the potential energy surface (PES) and total kinetic energy (TKE) mass distributions for the reactions involving ^(208)Hg,^(208)Pb,and ^(208) Po with ^(248) Cm and ^(232)Th.The PES and TKE spectra shed light on the fragment formation mechanisms in multinucleon transfer reactions,with clear indications of isospin and shell effects.The production cross sections for multinucleon transfer products show a strong dependence on isobar projectiles with a mass number A=208.Isobar projectiles with high N/Z ratios are advantageous for generating neutron-rich target-like fragments.Conversely,products induced by isobar projectiles with larger charge numbers tend to shift toward proton-rich regions.The intertwining of the Coulomb potential and shell effect is evident in the production cross sections of actinide isotopes.Drawing from reactions induced by radioactive projectiles,we anticipate the discovery of several new actinide isotopes near the nuclear drip lines,extending our reach into the superheavy nuclei domain.

关 键 词：Dinuclear system model Isobaric collisions Multinucleon transfer reactions Neutron-rich actinides 

分 类 号：TL921[核科学技术—核燃料循环与材料]