Theoretical study on production cross sections of exotic actinide nuclei in multinucleon transfer reactions

Zhu, Long

doi:10.1088/1674-1137/41/12/124102

Cited by 10 publications

(10 citation statements)

References 75 publications

(43 reference statements)

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“…A well-known model for predicting the cross sections for transfer products is Another model for predicting the yields of MNT products is the dinuclear system (DNS) model which is described in [14,15] A third model for predicting MNT yields that has been quite successful [4,5] is the Improved Quantum Molecular Dynamics (ImQMD) model [16,17]. This model has been shown to describe MNT yields in a wide variety of reactions.…”

Section: A Comparison With Phenomenological Modelsmentioning

confidence: 99%

Multinucleon transfer in the interaction of 977 MeV and 1143 MeV Hg204 with Pb208

et al. 2020

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A previous study of symmetric collisions of massive nuclei has shown that current models of multi-nucleon transfer (MNT) reactions do not adequately describe the transfer product yields. To gain further insight into this problem, we have measured the yields of MNT products in the interaction of 977 (E/A = 4.79 MeV) and 1143 MeV (E/A = 5.60 MeV) 204 Hg with 208 Pb. We find that the yield of multi-nucleon transfer products are similar in these two reactions and are substantially lower than those observed in the reaction of 1257 MeV (E/A = 6.16 MeV) 204 Hg + 198 Pt. We compare our measurements with the predictions of the GRAZING-F, di-nuclear systems (DNS) and improved quantum molecular dynamics (ImQMD) models. For the observed isotopes of the elements Au, Hg, Tl, Pb and Bi, the measured values of the MNT cross sections are orders of magnitude larger than the predicted values. Furthermore, the various models predict the formation of nuclides near the N=126 shell, which are not observed.

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Section: A Comparison With Phenomenological Modelsmentioning

confidence: 99%

Multinucleon transfer in the interaction of 977 MeV and 1143 MeV Hg204 with Pb208

et al. 2020

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“…The most important developments in the DNS-sysu in comparison to the previous version [35][36][37] are presented as follows. (i) The deformation degree of freedom is included in the master equation self-consistently.…”

Section: Theoretical Frameworkmentioning

confidence: 99%

Selection of projectiles for producing trans-uranium nuclei in transfer reactions within the improved dinuclear system model

Zhu

2020

J. Phys. G: Nucl. Part. Phys.

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The multinucleon transfer process is one promising approach for producing neutron-rich heavy nuclei. The favorable projectile-target combinations play a key role in experiments. As one important approach to investigate the multinucleon transfer process, one new version of the dinuclear system (DNS) model is developed. The improved version of the DNS model is shown in detail. Based on deformation degree of freedom in the improved DNS model, one way of calculating excitation energies of primary fragments is proposed. And the remarkable improvements for describing experimental data of producing trans-uranium nuclei is noticed. To produce trans-uranium nuclei, the collisions of 48 Ca, 136 Xe, and 238 U projectiles with the 238 U target are investigated within the improved DNS model. Based on the potential energy surface, the influence of projectiles on the probabilities of transferring neutrons and protons from the projectiles to the target are studied. One behavior is found that the transfer probabilities strongly depend on the projectiles in the neutron stripping process, while relatively weak projectile dependence is noticed in the proton transferring process. The 136 Xe and 238 U projectiles show great advantages of cross sections for producing neutron-rich trans-uranium nuclei, although the fission probabilities are large.

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“…It is important that we test the various models for MNT reactions, to evaluate their utility in planning future experiments and to gain a correct understanding of how MNT reactions work. There are five competing models or theoretical approaches for describing MNT reactions, the GRAZING model [44][45][46], the dinuclear systems model (DNS) 3 [6,7,10,38,[47][48][49][50][51][52][53], the Improved Quantum Molecular Dynamics model (ImQMD) [54][55][56][57], the Langevin approach of Zagrebaev and Greiner [18], and Karpov and Saito [37] and the time-dependent Hartree-Fock model (TDHF) [58,59] and hybrids of these models.…”

Section: Mnt Reactions-experimentsmentioning

confidence: 99%

The Synthesis of New Neutron-Rich Heavy Nuclei

Loveland

2019

Front. Phys.

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All the known isotopes of the elements Fm through Og are neutron-deficient relative to β-stability. In this contribution, I discuss two methods of producing more n-rich heavy nuclei, i.e., the use of radioactive nuclear beams (RNBs) and the use of multi-nucleon transfer (MNT) reactions. In the former case, I discuss recent studies of the interaction of 39,46 K with 181 Ta and their implications for the synthesis of more n-rich isotopes of Bh and Hs. In the case of MNT reactions, I discuss recent results for the reaction of 136 Xe with 208 Pb, 204 Hg + 198 Pt, and 136 Xe + 198 Pt. I compare measured distributions of the target-like fragments (TLFs) and projectile-like fragments (PLFs) with current models of MNT reactions.

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Theoretical study on production cross sections of exotic actinide nuclei in multinucleon transfer reactions

Cited by 10 publications

References 75 publications

Multinucleon transfer in the interaction of 977 MeV and 1143 MeV Hg204 with Pb208

Multinucleon transfer in the interaction of 977 MeV and 1143 MeV Hg204 with Pb208

Selection of projectiles for producing trans-uranium nuclei in transfer reactions within the improved dinuclear system model

The Synthesis of New Neutron-Rich Heavy Nuclei

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