Review
Physics, Multidisciplinary
Tea Mijatovic
Summary: This Mini Review discusses the application of multinucleon transfer reactions in understanding the production and structure of neutron-rich nuclei. Recent results on heavy neutron-rich nuclei production mechanisms and proton transfer channels are summarized, as well as the latest experimental results on nucleon-nucleon correlations.
FRONTIERS IN PHYSICS
(2022)
Review
Physics, Nuclear
S. Heinz, H. M. Devaraja
Summary: The use of multinucleon transfer reactions shows great potential in populating still vacant areas on the chart of nuclides, especially for neutron-rich isotopes. However, further research and development of suitable separation and detection techniques are needed.
EUROPEAN PHYSICAL JOURNAL A
(2022)
Article
Physics, Nuclear
Zhao-Qing Feng
Summary: The effects of cluster transfer and dynamical deformation on fragment formation were investigated in multinucleon-transfer reactions. Cluster transfer was found to increase the transferring nucleons and lead to a broad mass distribution. The production mechanism of neutron-rich isotopes and the cross sections for their production were thoroughly analyzed and estimated.
Article
Astronomy & Astrophysics
Long Zhu
Summary: The study quantitatively evaluated the impact of relative shell inhibition on the production cross sections of N=126 isotones for the first time, indicating that combinations characterized by double closed shell structure are unfavorable for producing unknown N=126 isotones. The effects of shell structure on production cross sections are mainly from the de-excitation process.
Article
Astronomy & Astrophysics
K. Zhao, Z. Liu, F. S. Zhang, N. Wang
Summary: The study found that the production cross sections for n-rich N=126 residual fragments are several times larger in the U-238 + Pt-198 reaction system than in the Xe-136 + Pt-198 system due to larger cross sections and lower excitation energies of primary fragments. In both systems, N=126 semi-magic residues are produced via neutron emission in the decay of primary fragments, surviving in semi-central collisions with lower excitation energies.
Article
Physics, Nuclear
Xiao Jun Bao
Summary: Investigations on multinucleon transfer mechanisms near barrier collisions between very heavy nuclei were conducted within the framework of the improved dinuclear system model, taking into account the influence of orientation effects and the statistical model code GEMINI++. Transfer reactions for different actinide targets were studied in detail, showing significant changes in isotopic distributions of the products. The results suggest that larger production cross sections of targetlike fragments can be achieved with the heaviest available target.
Article
Physics, Nuclear
Jing-Jing Li, Na Tang, Yu-Hai Zhang, Xin-Rui Zhang, Gen Zhang, Feng-Shou Zhang
Summary: This study investigates the production of neutron-rich transuranium nuclei with Z = 93-98 in multinucleon transfer reactions induced by radioactive beams using a theoretical model and decay code. The theoretical calculations are able to reproduce the experimental results well, showing the dominance of N/Z ratio equilibration and driving mechanisms in the nucleon transfer process.
Article
Physics, Nuclear
Na Tang, Xin-Rui Zhang, Jing-Jing Li, Pei-Wei Wen, Feng-Shou Zhang
Summary: Multinucleon transfer reactions offer a potential pathway for the synthesis of new neutron-rich isotopes. By using a hybrid model that combines the dinuclear system model and the GRAZING model, the transfer reaction in Kr-86 +(24)8Cm is investigated and found to reproduce experimental results well. Further investigations show that different reactions can selectively produce neutron-rich or neutron-deficient nuclei.
Article
Physics, Nuclear
J. Diklic, S. Szilner, L. Corradi, T. Mijatovic, G. Pollarolo, P. Colovic, G. Colucci, E. Fioretto, F. Galtarossa, A. Goasduff, A. Gottardo, J. Grebosz, A. Illana, G. Jaworski, M. Jurado Gomez, T. Marchi, D. Mengoni, G. Montagnoli, D. Nurkic, M. Siciliano, N. Soic, A. M. Stefanini, D. Testov, J. J. Valiente-Dobon, N. Vukman
Summary: We measured multinucleon transfer reactions for the 206Pb + 118Sn system at Elab = 1200 MeV using the large solid angle magnetic spectrometer PRISMA. Differential and total cross sections and Q-value distributions were obtained for various neutron and proton pick-up and stripping channels. The Q-value distributions reveal the dependence of quasielastic and deep inelastic processes on the transfer products' mass and charge. Comparison with calculations performed with the GRAZING code showed a good overall agreement for most few nucleon transfer channels, but underestimation of data for channels involving a large number of transferred nucleons suggests the occurrence of more complicated processes.
Article
Physics, Nuclear
Shuqing Guo, Xiaojun Bao, Nan Wang
Summary: Research has shown that in high-energy particle collision processes, heavier targets are more likely to produce light neutron-rich isotopes. The distribution of final isotopes was effectively simulated by excluding pairing energies.
Article
Astronomy & Astrophysics
Zhenji Wu, Lu Guo, Zhong Liu, Guangxiong Peng
Summary: In this study, the production of new proton-rich nuclei near Sn-100 is investigated using TDHF and GEMINI++ models. Multinucleon transfer reactions are shown to have much higher production cross sections compared to fusion-evaporation and projectile fragmentation experiments. It is predicted that 19 new proton-rich isotopes can be produced through multinucleon transfer reactions of Ni-58 with Sn-112.
Article
Nuclear Science & Technology
Peng-Hui Chen, Chang Geng, Zu-Xing Yang, Xiang-Hua Zeng, Zhao-Qing Feng
Summary: In this study, we systematically calculated the results of various nuclear reactions at different energies and studied the effects of shell and Coulomb effects. The results shed light on the fragment formation mechanisms in multinucleon transfer reactions, as well as the influence of isospin and shell effects. The findings are important for interpreting the production cross sections of actinide isotopes in nuclear reactions and provide insights into expanding our understanding of superheavy nuclei.
NUCLEAR SCIENCE AND TECHNIQUES
(2023)
Article
Physics, Nuclear
Long Zhu, Jun Su
Summary: By comparing fusion-evaporation (FE) and multinucleon transfer (MNT) approaches in the reaction Ca-48 + U-238, a unified description of FE and MNT processes is achieved within the (DNS) model. It is found that a compact configuration enhances fusion probability and the FE process shows great advantages in producing Cn isotopes and superheavy elements beyond oganesson. Additionally, experimental production cross sections of isotopes in FE and MNT processes can be simultaneously reproduced.
Article
Physics, Nuclear
Zehong Liao, Long Zhu, Jun Su, Cheng Li
Summary: This study investigates the mechanism of charge equilibration (CE) using the extended version of the dinuclear system model (DNS-sysu) and the improved quantum molecular dynamics (ImQMD) model. It reveals incomplete CE in mass asymmetry reaction systems, even in deep collisions, and the occurrence of inverse CE in the reaction 140Xe + 198Pt. Unlike the slow process in the ImQMD model, the DNS-sysu model shows fast equilibration with a characteristic time of approximately 0.52 zs, consistent with experimental data. The correlation between CE and mass asymmetry is clarified, providing insights into producing neutron-rich isotopes around N = 126.
Article
Physics, Nuclear
Zhi Cheng, Xiao Jun Bao
Summary: The improved dinuclear system model is effective in describing the isotopic distributions of the Ca-48 + U-238 reaction, while only partially successful in the Ca-48 + Cm-248 reaction. Experimental and theoretical data from multinucleon transfer reactions suggest that the isotopic distributions of the Ca-48 + U-238 reaction system are shifted towards the neutron-rich side above Pb compared to the Xe-136 + Pb-208 reaction, except for the isotopic distribution of Bi.
