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相关论文: Dynamics of the tri-nuclear system at spontaneous …

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We consider the collinear ternary fission which is a sequential ternary decay with a very short time between the ruptures of two necks connecting the middle cluster of the ternary nuclear system and outer fragments. In particular, we…

核理论 · 物理学 2015-06-11 R. B. Tashkhodjaev , A. I. Muminov , A. K. Nasirov , W. von Oertzen , Yongseok Oh

The concept of collinear spontaneous true ternary fission of 252Cf is subject to critical analysis. The conclusion is that the collinear flight of the fragments turns out to be a natural and most probable mode. The collinearity arises in…

核理论 · 物理学 2019-05-07 F. F. Karpeshin

A possibility of formation of the three reaction products having comparable masses at the spontaneous fission of $^{252}$Cf is theoretically explored. This work is aimed to study the mechanism leading to observation of the reaction products…

核理论 · 物理学 2015-10-28 A. K. Nasirov , W. von Oertzen , R. B. Tashkhodjaev

True ternary fission and Tin-accompanied ternary fission of $^{242}$Pu are studied by using Three Cluster Model. True ternary fission is considered as formation of heavy fragments in the region $28\leq Z_1,Z_2,Z_3\leq 38$, with comparable…

核理论 · 物理学 2019-09-04 M. Zadehrafi , M. R. Pahlavani , M. -R. Ioan

The existence of a new type of cluster decay called "collinear cluster tri-partition" (CCT) is discussed by an analysis of the landscape of the potential energy surface (PES). The total energy of the ternary system is found as a sum the…

核理论 · 物理学 2015-06-18 A. K. Nasirov , W. von Oertzen , A. I. Muminov , R. B. Tashkhodjaev

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

The ternary cluster decay of heavy nuclei has been observed in several experiments with binary coincidences between two fragments using detector telescopes (the FOBOS-detectors, JINR, Dubna) placed on the opposite sides from the source of…

核理论 · 物理学 2020-12-30 W. von Oertzen , A. K. Nasirov

We investigate the ternary fissions of $^{252}$Cf (spontaneous) and $^{236}$U (neutron-induced) into medium-mass fragments, as reported by the Dubna group, using the Hartree-Fock plus BCS method with the SLy6 Skyrme interaction. Compared to…

核理论 · 物理学 2025-07-01 Yannen Jaganathen , Janusz Skalski

It is shown that the collinear tripartition in the case of spontaneous fission of 252Cf generically follows the principles of the collective Bohr's model. Qualitative consideration is supported by the numerical trajectory calculations.

核理论 · 物理学 2019-04-10 F. F. Karpeshin

The mechanism leading to the formation of the observed products of the collinear cluster tripartition is carried out within the framework of the model based on the dinuclear system concept. The yield of fission products is calculated using…

核理论 · 物理学 2011-11-10 R. B. Tashkhodjaev , A. K. Nasirov , W. Scheid

In a series of the experiments at different time-of-flight spectrometers of heavy ions we have observed manifestations of a new at least ternary decay channel of low excited heavy nuclei. Due to specific features of the effect, it was…

A new mode of nuclear fission has been proposed by the FOBOS collaboration, called Collinear Cluster Tri-partition (CCT), suggesting that three heavy fission fragments can be emitted perfectly collinearly in low-energy fission. It is…

核理论 · 物理学 2017-01-09 Patric Holmvall , Ulli Köster , Andreas Heinz , Thomas Nilsson

A weak dependence of the angular momentum of $^{144}$Ba fragments, produced in the spontaneous fission of $^{252}$Cf, on the total kinetic energy (TKE) was recently observed \cite{Giha2025}. To investigate this phenomenon, we propose a…

核理论 · 物理学 2025-06-10 A. Rahmatinejad , T. M. Shneidman , G. G. Adamian , N. V. Antonenko

The cold(neutronless) fission of $^{252}$Cf is studied in the frame of a molecular model in which the scission configuration is described by two aligned fragments interacting by means of Coulomb (+ nuclear) forces. The study is carried out…

核理论 · 物理学 2007-05-23 S. Misicu , P. Quentin

We found that a true ternary fission with formation of a heavy third fragment (a new type of radioactivity) is quite possible for superheavy nuclei due to the strong shell effects leading to a three-body clusterization with the two doubly…

核理论 · 物理学 2010-04-22 V. I. Zagrebaev , A. V. Karpov , Walter Greiner

The recent advent of experimental techniques in which the dynamical characteristics of fission fragments are determined more accurately, prompted us to investigate the angular momentum acquired by fragments in a model which describes the…

核理论 · 物理学 2009-11-06 S. Misicu , A. Sandulescu , G. M. Ter-Akopian , W. Greiner

A new type of decay corresponding to the neutronless $^{10}$Be-accompanied fragmentation of $^{252}$Cf is studied. We employ a cluster model similar to the model used for the description of cluster radioactivity. No preformation factors…

核理论 · 物理学 2016-09-08 A. Sandulescu , F. Carstoiu , S. Misicu , A. Florescu , A. V. Ramayya , J. H. Hamilton , W. Greiner

Using a unique two-arm detector system for heavy ions (the BRS, binary reaction spectrometer) coincident fission events have been measured from the decay of $^{60}$Zn compound nuclei formed at 88MeV excitation energy in the reactions with…

Ternary fission yields in the reaction 241Pu(nth,f) are calculated using a new model which assumes a nucleation-time moderated chemical equilibrium in the low density matter which constitutes the neck region of the scissioning system. The…

核实验 · 物理学 2015-06-19 S. Wuenschel , H. Zheng , K. Hagel , B. Meyer , M. Barbui , E. J. Kim , G. Roepke , J. B. Natowitz

Experiments in preparation for search for uranium ternary fission by means of nuclear track emulsion are summarized. The study will be focused on the possible involvement of the unstable nucleus ${}^{8}$Be in the suggested scenario of the…

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