Production of proton-rich nuclei in the vicinity of 100Sn via multinucleon transfer reactions

Wu, Zhaoyang; Guo, Lu; Liu, Zhong; Peng, Guang-Xiong

doi:10.1016/j.physletb.2022.136886

Cited by 28 publications

(7 citation statements)

References 64 publications

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“…The time evolution of each reaction system is obtained by using the modified version of the Sky3D code [77], which was also used to perform calculations in Refs. [56,58,65,66,[78][79][80][81][82]. Recently, the density functional SLy5 [83] has been adopted in many investigations [47,56,58,65,66,81,82,84] and also used in present work.…”

Section: Resultsmentioning

confidence: 99%

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Microscopic study of the compound nucleus formation in cold-fusion reactions

Sun,

Guo

2022

Preprint

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The understanding of the fusion probability is of particular importance to reveal the mechanism of producing superheavy elements. We present a microscopic study of the compound nucleus formation by combining timedependent density functional theory, coupled-channels approach, and dynamical diffusion models. The fusion probability and compound nucleus formation cross sections for cold-fusion reactions 48 Ca+ 208 Pb, 50 Ti+ 208 Pb, and 54 Cr+ 208 Pb are investigated and it is found that the deduced capture barriers, capture cross sections for these reactions are consistent with experimental data. Above the capture barrier, our calculations reproduce the measured fusion probability reasonably well. Our studies demonstrate that the restrictions from the microscopic dynamic theory improve the predictive power of the coupled-channels and diffusion calculations.

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Section: Resultsmentioning

confidence: 99%

“…[56,58,65,66,[78][79][80][81][82]. Recently, the density functional SLy5 [83] has been adopted in many investigations [47,56,58,65,66,81,82,84] and also used in present work. The ground states of 48 Ca, 50 Ti, 54 Cr, and 208 Pb are obtained by solving the static HF equation on a three-dimensional grid 28 × 28 × 28 fm 3 .…”

Section: Resultsmentioning

confidence: 99%

Microscopic study of the compound nucleus formation in cold-fusion reactions

Sun,

Guo

2022

Preprint

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“…The time-dependent Hartree-Fock (TDHF) approach has been extensively used to investigate quasi-fission mechanisms in the past decade [23,28,[53][54][55][56][57][58][59][60][61][62][63]. Three main observables are commonly used to characterise quasifission in such calculations: contact times, TKE and final mass asymmetries of the fragments.…”

Section: B Quasifission Signaturesmentioning

confidence: 99%

Time-dependent Hartree-Fock study of quasifission trajectories in reactions forming $^{294}$Og

McGlynn¹,

Simenel²

2023

Preprint

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Background: Fission modes in superheavy nuclei are expected to be impacted by quantum shell effects. Similar shell effects may be present in quasifission reactions, acting to hinder the mass equilibration process in heavy-ion collisions.Purpose: To investigate quasifission mechanisms in five different reactions forming 294 Og as a compound nucleus and compare quasifission trajectories with predicted fission modes.Methods: The potential energy surface (PES) of 294 Og is calculated using the static Hartree-Fock approach with BCS pairing correlations. Quasifission trajectories for central collisions at various energies are studied with the time-dependent Hartree-Fock theory.Results: The exit channel strongly depends on initial mass asymmetry and orientation, but it only exhibits small dependences in the reaction energy. The 48 Ca+ 246 Cf reaction is affected by the PES topology, leading to either fusion or asymmetric fission. Spherical shell effects associated with the Z = 50 magic gap hinder charge and mass equilibrations in 126 Sn+ 168 Er, resulting in large total kinetic energies and compact scission configurations.Conclusions: Quasifission trajectories can be interpreted in terms of the underlying PES for low excitation energies. Future investigations of quasifission with temperature and angular momentum dependent PES could be considered.

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“…On the other hand, the introduction of new experimental facilities such as FRIB will potentially extend the studies of rotational structures to significantly more proton-and neutron-rich nuclei as compared with those investigated till now. At present, the properties of very proton-and neutron-rich nuclei located in the vicinity of respective drip lines are in the focus of experimental and theoretical studies [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Fast rotation of nuclei with extreme isospin in the vicinity of neutron and proton drip lines

Afanasjev,

Teeti,

Taninah

2024

Phys. Scr.

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The analysis of the present understanding of collective rotation in very neutron-rich nuclei is presented. It is shown that collective rotation can lead to the increase of stability of rotational states with increasing spin. The detailed investigation of rotational excitations in very proton-rich nuclei conﬁrms this conclusion and indicate that experimental studies of such features are more feasible in the nuclei near proton drip line. They also show that rotational bands which are proton quasi-bound at zero or low spins can be transformed into proton bound ones at high spin by collective rotation of nuclear systems. This is due to strong Coriolis interaction which acts on high-j or strongly mixed M orbitals and drives the highest in energy occupied single-particle states into negative energy domain. These physical mechanisms lead to a substantial extension of the nuclear landscape beyond the spin zero proton drip line. In addition, a new phenomenon of the formation of giant proton halos in rotating nuclei emerges: it is triggered by the occupation of strongly mixed M intruder orbitals.

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Production of proton-rich nuclei in the vicinity of 100Sn via multinucleon transfer reactions

Cited by 28 publications

References 64 publications

Microscopic study of the compound nucleus formation in cold-fusion reactions

Microscopic study of the compound nucleus formation in cold-fusion reactions

Time-dependent Hartree-Fock study of quasifission trajectories in reactions forming $^{294}$Og

Fast rotation of nuclei with extreme isospin in the vicinity of neutron and proton drip lines

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