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

doi:10.1007/s41365-016-0146-y

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 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

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Abstract

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 E^∗_sc 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

[1]	XIE Wenjie, ZHANG Fengshou. Probing the density dependence of the symmetry energy with central heavy ion collisions [J]. Nuclear Science and Techniques, 2013, 24(5): 50502-050502.
[2]	YE Wei, WANG Ning. Spallation reaction and the probe of nuclear dissipation with excitation energy at scission [J]. Nuclear Science and Techniques, 2013, 24(5): 50521-050521.

Nuclear Science and Techniques

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

Abstract

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