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): 145 doi: 10.1007/s41365-016-0146-y

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

Investigating nuclear dissipation properties at large deformations via excitation energy at scission

Jian Tian,  Wei Ye   

  1. 1 Department of Physics, Southeast University, Nanjing 210096, China
  • Contact: Wei Ye E-mail:yewei@seu.edu.cn
  • Supported by:

    This work was supported by the National Nature Science Foundation of China (No. 11575044).

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Jian Tian, Wei Ye. Investigating nuclear dissipation properties at large deformations via excitation energy at scission.Nuclear Science and Techniques, 2016, 27(6): 145     doi: 10.1007/s41365-016-0146-y

Abstract:

Using the stochastic Langevin model coupled with a statistical decay model, we study nuclear dissipation properties at large deformations with excitation energy at scission ( E∗scEsc∗ ) measured in experiments. It is found that the postsaddle dissipation strength required to fit Esc data is 12 ×1021 s −1 for 254,256 Fm and 6 ×10 21s −1 for 189Au, which has a smaller postsaddle deformation than the former heavy nucleus, showing a rise of nuclear dissipation strength with increasing deformation.

Key words: Excitation energy at scission, Langevin model, Nuclear dissipation