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The multinucleon transfer reactions near barrier energies has been investigated with a multistep model based on the dinuclear system (DNS) concept, in which the capture of two colliding nuclei, the transfer dynamics and the de-excitation…

Nuclear Theory · Physics 2018-01-03 Fei Niu , Peng-Hui Chen , Ya-Fei Guo , Chun-Wang Ma , Zhao-Qing Feng

New measurements and reaction model calculations are reported for single neutron pickup reactions onto a fast \nuc{22}{Mg} secondary beam at 84 MeV per nucleon. Measurements were made on both carbon and beryllium targets, having very…

New reaction mechanisms occurring in heavy ion collisions at low energy (10- 30 MeV/A) are investigated within the Stochastic Mean Field model. We concentrate on the analysis of ternary breakup events, of dynamical origin, occurring in…

Nuclear Theory · Physics 2015-06-22 C. Rizzo , M. Colonna , V. Baran , M. Di Toro

We investigate the reaction path followed by Heavy Ion Collisions with exotic nuclear beams at low energies. We will focus on the interplay between reaction mechanisms, fusion vs. break-up (fast-fission, deep-inelastic), that in exotic…

Nuclear Theory · Physics 2011-01-28 C. Rizzo , V. Baran , M. Colonna , A. Corsi , M. Di Toro

The reaction mechanisms best suited for the production of neutron-rich nuclei, fragmentation and fission, are discussed. Measurements of the production cross sections of reaction residues together with model calculations allow to conclude…

Nuclear Experiment · Physics 2017-08-23 J. Benlliure , K. Helariutta , K. -H. Schmidt , M. V. Ricciardi

Within the concept of the dinuclear system (DNS), a dynamical model is proposed for describing the formation of superheavy nuclei in complete fusion reactions by incorporating the coupling of the relative motion to the nucleon transfer…

Nuclear Theory · Physics 2008-11-26 Zhao-Qing Feng , Gen-Ming Jin , Jun-Qing Li , Werner Scheid

Production of the doubly strange $\Xi $ baryon in heavy-ion collisions at \textrm{SIS} energies is studied in a relativistic transport model that includes perturbatively the strangeness-exchange reactions $\bar{K}\Lambda \to \pi \Xi $ and…

Nuclear Theory · Physics 2009-11-10 Lie-Wen Chen , Che Ming Ko , Yiharn Tzeng

To assess the potential of cold-fusion for synthesizing superheavy nuclei (SHN) with proton numbers 104-113, we systematically calculated 145 naturally occurring projectile-target combinations within the DNS model. Reactions predominantly…

Nuclear Theory · Physics 2024-05-03 Hao Wu , Peng-Hui Chen , Fei Niu , Zu-Xing Yang , Xiang-Hua Zeng , Zhao-Qing Feng

We report the properties of the prompt dipole radiation, produced via a collective bremsstrahlung mechanism, in fusion reactions with exotic beams. We show that the gamma yield is sensitive to the density dependence of the symmetry energy…

Nuclear Theory · Physics 2009-03-04 V. Baran , C. Rizzo , M. Colonna , M. Di Toro , D. Pierroutsakou

We investigate production of \phi mesons and \Xi baryons in nucleus-nucleus collisions. Reactions on strange particles acting as a catalyser are proposed to interpret the high observed \phi yields in HADES experiments as well as the energy…

Nuclear Theory · Physics 2015-03-19 Boris Tomasik , Evgeni E. Kolomeitsev

We studied the production of neutron-rich nuclides in multinucleon transfer collisions of stable and radioactive beams in the mass range A=40-60. We first presented our experimental cross section data of projectile fragments from the…

The challenge of isotopic identification over a wide angular distribution has limited the measurement of neutron-rich nuclei produced via the multinucleon transfer (MNT) process. To investigate the optimal detection angles for the N=126…

Nuclear Theory · Physics 2023-04-17 Zehong Liao , Long Zhu , Zepeng Gao , Jun Su , Cheng Li

The dynamics of exotic hypernuclei in heavy-ion collisions has been investigated thoroughly with a microscopic transport model. All possible channels on hyperon ($\Lambda$, $\Sigma$ and $\Xi$) production near threshold energies are…

Nuclear Theory · Physics 2020-10-14 Zhao-Qing Feng

The mechanism of multinucleon transfer (MNT) reactions for producing neutron-rich heavy nuclei around N = 126 is investigated within two different theoretical frameworks: dinuclear system (DNS) model and isospin-dependent quantum molecular…

Nuclear Theory · Physics 2019-03-27 Long Zhu , Cheng Li , Jun Su , Chen-Chen Guo , Wei Hua

Within the dinuclear system model, unknown neutron-deficient isotopes Np, Pu, Am, Cm, Bk, Cf, Es, Fm are investigated in $^{40}$Ca, $^{36,40}$Ar, $^{32}$S, $^{28}$Si,$^{24}$Mg induced fusion-evaporation reactions and multinucleon transfer…

Nuclear Theory · Physics 2020-08-05 Peng-Hui Chen , Fei Niu , Zhao-Qing Feng

The dynamics of light hypernuclei and nuclear clusters produced in $^{197}$Au+$^{197}$Au collisions has been investigated thoroughly with a microscopic transport model. All possible channels of hyperon production and transportation of…

Nuclear Theory · Physics 2021-09-06 Zhao-Qing Feng

We study the details and time dependence of particle production in nuclear collisions at a fixed target beam energy of $E_{\mathrm{lab}}= 1.76$ A GeV with the UrQMD transport model. We find that the previously proposed production mechanism…

Nuclear Theory · Physics 2016-07-13 J. Steinheimer , M. Lorenz , F. Becattini , R. Stock , M. Bleicher

Isotopic yields for light particles and intermediate mass fragments have been measured for 112Sn+112Sn, 112Sn+124Sn, 124Sn+112Sn and 124Sn+124Sn central collisions at E/A=50 MeV and compared with predictions of stochastic mean field…

Rare isotope beams of neutron-deficient $^{106,108,110}$Sn nuclei from the fragmentation of $^{124}$Xe were employed in an intermediate-energy Coulomb excitation experiment yielding $B(E2, 0^+_1 \to 2^+_1)$ transition strengths. The results…

The squeeze-out flow in reactions of $^{124}$Sn + $^{124}$Sn and $^{124}$Ba + $^{124}$Ba at different incident energies for different impact parameters is investigated by means of an isospin-dependent quantum molecular dynamics model. For…

Nuclear Theory · Physics 2009-11-06 Feng-Shou Zhang , Lie-Wen Chen , Zhi-Yuan Zhu