Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2016, Vol. 27 ›› Issue (6): 150 doi: 10.1007/s41365-016-0151-1

Special Issue: Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2016)

• Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2016) • Previous Articles     Next Articles

Systematics of α-preformation factors in closed-shell regions

Da-Ming Deng 1 , Zhong-Zhou Ren 1,2,3   

  1. 1 Key Laboratory of Modern Acoustics and Department of Physics, Nanjing University, Nanjing 210093, China
    2 Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou 730000, China
    3 State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Science, Beijing 100190, China
  • Contact: Da-Ming Deng E-mail:dengdaming@smail.nju.edu.cn
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (Nos. 11535004, 11375086, 11120101005, 11175085 and 11235001), the 973 National Major State Basic Research and Development of China (No. 2013CB834400), and the Science and Technology Development Fund of Macau (No. 068/2011/A).

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Da-Ming Deng, Zhong-Zhou Ren . Systematics of α-preformation factors in closed-shell regions.Nuclear Science and Techniques, 2016, 27(6): 150     doi: 10.1007/s41365-016-0151-1

Abstract:

The α-preformation factors of medium and heavy-mass nuclei are calculated by using the cluster-formation model. The obtained preformation factors of even–even, odd-A, and odd–odd nuclei consist in both magnitude and trend with the general features predicted by standard calculations. The variation of α clustering affected by the evolution of nuclear structure is observed from different behaviors of preformation factors. We typically analyze the variation of preformation factors in the closed-shell N=126 and Z=82 regions, and discuss in detail the structural effects on α-cluster formation. This work shows the strong correlation between α-preformation factors and the shell structure, which would be a useful reference for microscopic cluster-model calculations of αα-decay half-lives.

Key words: α-Preformation factors, α Clustering, α Decay, Medium and heavy-mass nuclei