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Within the Unified ternary fission model (UTFM), the alpha accompanied ternary fission of even-even $^{244-260}$Cf isotopes has been studied by taking the interacting barrier as the sum of Coulomb and proximity potential. For the alpha…

核理论 · 物理学 2016-04-22 K P Santhosh , Sreejith Krishnan

Based on a recent experimental finding which may suggest the existence of a tri-nuclear molecular structure before the cold ternary fragmentation of $^{252}$Cf takes place, we solved the eigenvalue problem of a certain class of vibrations…

核理论 · 物理学 2007-05-23 S. Misicu , P. O. Hess , A. Sandulescu , W. Greiner

When multiple fission modes coexist in a given nucleus, distinct fragment yield distributions appear. Multimodal fission has been observed in a number of fissioning nuclei spanning the nuclear chart, and this phenomenon is expected to…

Background: A quantitative microscopic understanding of the fission-fragment yield distributions represents a major challenge for nuclear theory as it involves the intricate competition between large-amplitude nuclear collective motion and…

核理论 · 物理学 2022-02-02 Jhilam Sadhukhan , Samuel A. Giuliani , Witold Nazarewicz

We suggest to explore an entirely new method to experimentally and theoretically study the phase diagram of strongly interacting matter based on the triple nuclear collisions (TNC). We simulated the TNC using the UrQMD 3.4 model at the beam…

A variety of phenomena connected with the formation of a dinuclear complex is observed in the heavy ion collisions at low energies. The dinuclear system model allows us to analyze the experimental data and to interpret them by comparison of…

核理论 · 物理学 2011-04-28 A. K. Nasirov , G. Giardina , G. Mandaglio , M. Manganaro , W. Scheid

We have studied nuclear fusion reactions from the Coulomb explosion of deuterium clusters induced by high-intensity laser beams within a transport approach. By incorporating the D+D $\rightarrow$ n + He$^3$ channel as inelastic collisions…

核理论 · 物理学 2022-09-20 Zhe Zhu , Jun Xu , Guo-Qiang Zhang

To synthesize superheavy element 119 is becoming highly concerned as several experimental projects in major laboratories are being pursued. This work studied the survival probabilities of compound superheavy nuclei after multiple neutron…

核理论 · 物理学 2024-08-15 Yu Qiang , Xiang-Quan Deng , Yue Shi , C. Y. Qiao , Junchen Pei

The $\phi$-meson production cross section is measured for the first time at a sub-threshold energy of 1.93 AGeV in \nuc{58}{Ni}+\nuc{58}{Ni} central collisions. The $\phi$ data were obtained within the acceptance of the CDC/Barrel subsystem…

核实验 · 物理学 2019-08-14 A. Mangiarotti , N. Herrmann , P. R. Maurenzig , A. Gobbi , R. Kotte , J. Kecskemeti , Y. Leifels

\noindent\textbf{Background:} While many phenomenological models for nuclear fission have been developed, a microscopic understanding of fission has remained one of the most challenging problems in nuclear physics.…

核理论 · 物理学 2022-04-06 K. Uzawa , K. Hagino , K. Yoshida

The yields of light elements ($Z=1,2$) obtained from spontaneous ternary fission of $^{252}$Cf are treated within a nonequilibrium approach, and the contribution of unstable nuclei and excited bound states is taken into account. These light…

核理论 · 物理学 2020-10-28 G. Röpke , J. B. Natowitz , H. Pais

Colliding heavy nuclear systems in the deep-inelastic regime may undergo partitioning into multiple fragments when fusion can not be achieved. While multiple breakups are common at Fermi energy, they are rather exotic in the deep-inelastic…

核理论 · 物理学 2019-11-27 P. Napolitani , A. Sainte-Marie , M. Colonna

Quasifission, along with fusion-fission, represent the two most likely reaction outcomes to occur post-capture in collisions leading to superheavy nuclei. As such, understanding these mechanisms and how they relate to one another is key to…

核理论 · 物理学 2025-03-26 Richard Gumbel , Kyle Godbey

We apply for the first time fission yields determined across the chart of nuclides from the macroscopic-microscopic theory of the Finite Range Liquid Drop Model to simulations of rapid neutron capture ($r$-process) nucleosynthesis. With the…

高能天体物理现象 · 物理学 2020-06-22 Nicole Vassh , Matthew R. Mumpower , Gail C. McLaughlin , Trevor M. Sprouse , Rebecca Surman

Fission plays an important role in the r-process which is responsible not only for the yields of transuranium isotopes, but may have a strong influence on the formation of the majority of heavy nuclei due to fission recycling. We present…

天体物理学 · 物理学 2009-11-10 I. V. Panov , E. Kolbe , B. Pfeiffer , T. Rauscher , K. -L. Kratz , F. -K. Thielemann

The correlations between the shape of rapidity distribution of the yield of light charged particles and the fragmentation modes in semi-peripheral collisions for $^{70}$Zn+$^{70}$Zn, $^{64}$Zn+$^{64}$Zn and $^{64}$Ni+$^{64}$Ni at the beam…

核理论 · 物理学 2015-11-10 Yingxun Zhang , Chengshuang Zhou , Jixian Chen , Ning Wang , Kai Zhao , Zhuxia Li

Background: Recent experiments on beta-delayed fission in the mercury-lead region and the discovery of asym- metric fission in 180 Hg [1] have stimulated theoretical interest in the mechanism of fission in heavy nuclei. Purpose: We study…

核理论 · 物理学 2015-06-05 M. Warda , A. Staszczak , W. Nazarewicz

We perform exact coupled-channels calculations, taking into account properly the effects of Coulomb coupling and the finite excitation energy of collective excitations in the colliding nuclei, for three Fm formation reactions, $^{37}$Cl +…

核理论 · 物理学 2009-11-10 K. Hagino , N. Rowley , T. Ohtsuki , M. Dasgupta , J. O. Newton , D. J. Hinde

Fission fragments' charge and mass distribution is an important input to applications ranging from basic science to energy production or nuclear non-proliferation. In simulations of nucleosynthesis or calculations of superheavy elements,…

核理论 · 物理学 2021-05-12 Marc Verriere , David Regnier , Nicolas Schunck

Central nucleus-nucleus collisions produce many new baryons and the nuclear clusters can be formed from these species. The phenomenological coalescence models were sufficiently good for description of light nuclei yields in a very broad…

核理论 · 物理学 2021-06-09 A. S. Botvina , N. Buyukcizmeci , M. Bleicher