Multinucleon transfer dynamics in nearly symmetric nuclear reactions

Niu, Fei; Chen, Penghui; Cheng, Hui-Gan; Zhu, Feng

doi:10.1007/s41365-020-00770-1

Cited by 11 publications

(1 citation statement)

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“…The emission of the MNT fragments is anisotropic and related to the reaction system and beam energy [23]. Accurate estimation of the angular distribution would be helpful for managing the detector system in experiments, which is associated with the dynamical characteristics in MNT reactions, i.e., the deformation of the DNS fragments, dissipation of relative energy and angular momentum, nucleon transfer etc [58]. Figure 8 shows the selected nuclides with Z=104-107 produced in the MNT reaction of 238 U+ 252 Cf at E lab =7.0 MeV/nucleon (left panel) and the angular distribution of Rf at the incident energies of 7, 7.5, 8 MeV/nucleon, respectively (right panel).…”

Section: Resultsmentioning

confidence: 99%

Production of neutron-rich heavy nuclei around N = 162 in multinucleon transfer reactions

Peng,

Feng

2021

Preprint

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Within the framework of the dinuclear system model, the production mechanism of neutron-rich heavy nuclei around N = 162 has been investigated systematically. The isotopic yields in the multinucleon transfer reaction of 238 U + 248 Cm was analyzed and compared the available experimental data. Systematics on the production of superheavy nuclei via 238 U on 252,254 Cf, 254 Es and 257 Fm is investigated. It is found that the shell effect is of importance in the formation of neutron-rich nuclei around N=162 owing to the enhancement of fission barrier. The fragments in the multinucleon transfer reactions manifest the broad isotopic distribution and are dependent on the beam energy. The polar angles of the fragments tend to the forward emission with increasing the beam energy. The production cross sections of new isotopes are estimated and heavier targets are available for the neutron-rich superheavy nucleus formation. The optimal system and beam energy are proposed for the future experimental measurements.

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Section: Resultsmentioning

confidence: 99%