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首页> 外文期刊>Physical Review C >Multinucleon transfer dynamics in heavy-ion collisions near Coulomb-barrier energies
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Multinucleon transfer dynamics in heavy-ion collisions near Coulomb-barrier energies

机译：Coulomb阻挡能量附近的重离子碰撞中的多核传递动力学

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摘要

Multinucleon transfer reactions near barrier energies have been investigated with a multistep model based on the dinuclear system (DNS) concept, in which the capture of two colliding nuclei, the transfer dynamics, and the deexcitation process of primary fragments are described by an analytical formula, diffusion theory, and a statistical model, respectively. The nucleon transfer takes place after forming the DNS and is coupled to the dissipation of relative motion energy and angular momentum by solving a set of microscopically derived master equations within the potential energy surface. Specific reactions of ~(40,48)Ca + ~ (124)Sn, ~(40)Ca(~(40)Ar,~(58)Ni) + ~(232)Th, ~(40)Ca(~(58)Ni) + ~(238)U, and ~(40,48)Ca(~(58)Ni) + ~(248)Cm near barrier energies are investigated. It is found that fragments are produced by multinucleon transfer reactions with maximal yields along the β- stability line. The isospin relaxation is particularly significant in the process of fragment formation. The incident energy dependence of heavy target-like fragments in the reaction of ~(58)Ni + ~(248)Cm is analyzed thoroughly.
机译：已经研究了基于Dinuclecle System（DNS）概念的多步模型对屏障能量附近的多核转移反应，其中通过分析公式描述了两个碰撞核，转移动力学和初级片段的脱尿素过程的捕获，扩散理论分别和统计模型。通过在潜在能量表面内求解一组显微级源极方程，核传递在形成DNS之后进行核磁转移并耦合到相对运动能量和角动量的耗散。特定反应〜（40,48）Ca +〜（124）Sn，〜（40）Ca（〜（40）Ar，〜（58）Ni）+〜（232）Th，〜（40）Ca（〜（ 58）Ni）+〜（238）U，〜（40,48）Ca（〜（58）Ni）+〜（248）厘米近屏障能量。发现碎片是通过沿β-稳定线的最大产率的多核转移反应产生的。在片段形成过程中，等孔弛豫在碎片的过程中特别显着。彻底分析了〜（58）Ni +〜（248）cm反应中重靶样片段的入射能量依赖性。

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  • 来源
    《Physical Review C》 |2017年第2017期|064622.1-064622.9|共9页
  • 作者

    Fei Niu; Peng-Hui Chen; Ya-Fei Guo; Chun-Wang Ma; Zhao-Qing Feng;

  • 作者单位

    Institute of Particle and Nuclear Physics Henan Normal University Xinxiang 453007 People’s Republic of China Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 People’s Republic of China;

    Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 People’s Republic of China University of Chinese Academy of Sciences Beijing 100190 People’s Republic of China;

    Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 People’s Republic of China;

    Institute of Particle and Nuclear Physics Henan Normal University Xinxiang 453007 People’s Republic of China;

    Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 People’s Republic of China;

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