Production mechanism of neutron-rich nuclei around N=126 in the multi-nucleon transfer reaction 132Sn + 208Pb

  • The time-dependent Hartree-Fock approach in three dimensions is employed to study the multi-nucleon transfer reaction 132Sn + 208Pb at various incident energies above the Coulomb barrier. Probabilities for different transfer channels are calculated by using the particle-number projection method. The results indicate that neutron stripping (transfer from the projectile to the target) and proton pick-up (transfer from the target to the projectile) are favored. De-excitation of the primary fragments is treated by using the state-of-art statistical code GEMINI++. Primary and final production cross sections of the target-like fragments (with Z=77 to Z=87) are investigated. The results reveal that fission decay of heavy nuclei plays an important role in the de-excitation process of nuclei with Z>82. It is also found that the final production cross sections of neutron-rich nuclei depend only slightly on the incident energy, while those of neutron-deficient nuclei depend strongly on the incident energy.
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Xiang Jiang and Nan Wang. Production mechanism of neutron-rich nuclei around N=126 in the multi-nucleon transfer reaction 132Sn + 208Pb[J]. Chinese Physics C, 2018, 42(10): 104105. doi: 10.1088/1674-1137/42/10/104105
Xiang Jiang and Nan Wang. Production mechanism of neutron-rich nuclei around N=126 in the multi-nucleon transfer reaction 132Sn + 208Pb[J]. Chinese Physics C, 2018, 42(10): 104105.  doi: 10.1088/1674-1137/42/10/104105 shu
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Received: 2018-07-10
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    Supported by National Natural Science Foundation of China (11705118, 11475115, 11647026) and Natural Science Foundation of SZU (2016017).

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Production mechanism of neutron-rich nuclei around N=126 in the multi-nucleon transfer reaction 132Sn + 208Pb

    Corresponding author: Nan Wang,
  • 1. College of Physics and Energy, Shenzhen University, Shenzhen 518060, China
Fund Project:  Supported by National Natural Science Foundation of China (11705118, 11475115, 11647026) and Natural Science Foundation of SZU (2016017).

Abstract: The time-dependent Hartree-Fock approach in three dimensions is employed to study the multi-nucleon transfer reaction 132Sn + 208Pb at various incident energies above the Coulomb barrier. Probabilities for different transfer channels are calculated by using the particle-number projection method. The results indicate that neutron stripping (transfer from the projectile to the target) and proton pick-up (transfer from the target to the projectile) are favored. De-excitation of the primary fragments is treated by using the state-of-art statistical code GEMINI++. Primary and final production cross sections of the target-like fragments (with Z=77 to Z=87) are investigated. The results reveal that fission decay of heavy nuclei plays an important role in the de-excitation process of nuclei with Z>82. It is also found that the final production cross sections of neutron-rich nuclei depend only slightly on the incident energy, while those of neutron-deficient nuclei depend strongly on the incident energy.

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