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Collisions between $^{248}$Cm and $^{48}$Ca are systematically investigated by time-dependent density functional calculations with evaporation prescription. Depending on the incident energy and impact parameter, fusion, deep-inelastic and…

Nuclear Theory · Physics 2015-01-27 Yoritaka Iwata , Sophia Heinz

A great many observables seen in intermediate energy heavy ion collisions can be explained on the basis of statistical equilibrium. Calculations based on statistical equilibrium can be implemented in microcanonical ensemble (energy and…

Nuclear Theory · Physics 2009-11-10 C. B. Das , S. Das Gupta , W. G. Lynch , A. Z. Mekjian , M. B. Tsang

Current work discusses methods for estimating the moments of inertia of fission fragments for spontaneous fission of the isotope Cf-252, in particular, two main approaches are mentioned: statistical and microscopic. In addition, the methods…

Nuclear Theory · Physics 2024-08-27 D. E. Lyubashevsky , P. V. Kostryukov , A. A. Pisklyukov , J. D. Shcherbina

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…

Nuclear Experiment · Physics 2015-06-19 S. Wuenschel , H. Zheng , K. Hagel , B. Meyer , M. Barbui , E. J. Kim , G. Roepke , J. B. Natowitz

In this letter, we outline a methodology to calculate microscopically mass and charge distributions of spontaneous fission yields. We combine the multi-dimensional minimization of collective action for fission with stochastic Langevin…

Nuclear Theory · Physics 2016-01-27 Jhilam Sadhukhan , Witold Nazarewicz , Nicolas Schunck

We compute the final kinetic energies of the fragments emitted in the light charged particle accompanied cold fission of $^{252}$Cf taking into account the ground state quadrupole deformation and the finite-size effects of the fragments and…

Nuclear Theory · Physics 2007-05-23 Serban Misicu , A. Sandulescu , F. Carstoiu , M. Rizea , W. Greiner

The three-body problem is reexamined in the framework of general relativity. The Newtonian three-body problem admits Euler's collinear solution, where three bodies move around the common center of mass with the same orbital period and…

General Relativity and Quantum Cosmology · Physics 2010-12-13 Kei Yamada , Hideki Asada

In this communication we introduce a new model which represents the interaction between an atom and two fields injected simultaneously within a cavity including the nonlinear couplers. By using the canonical transformation the model can be…

Quantum Physics · Physics 2009-11-13 Mahmoud Abdel-Aty , M. Sebawe Abdalla , Barry C. Sanders

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…

Nuclear Theory · Physics 2007-05-23 S. Misicu , P. Quentin

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…

Nuclear Theory · Physics 2025-07-01 Yannen Jaganathen , Janusz Skalski

The spontaneous fission lifetime of 264Fm has been studied within nuclear density functional theory by minimizing the collective action integral for fission in a two-dimensional quadrupole collective space representing elongation and…

Nuclear Theory · Physics 2015-06-17 Jhilam Sadhukhan , K. Mazurek , A. Baran , J. Dobaczewski , W. Nazarewicz , J. A. Sheikh

A geometrical model which captures the main ingredients governing atom-diatom collinear chemical reactions is proposed. This model is neither near-integrable nor hyperbolic, yet it is amenable to analysis using a combination of the recently…

Chaotic Dynamics · Physics 2018-04-10 L. Lerman , V. Rom-Kedar

Solutions to the collinear three-body problem which do not end in triple collision pass through an infinite number of binary collisions. Given three masses, we show that four geometric quantities generate a finite description of itineraries…

Dynamical Systems · Mathematics 2007-05-23 Samuel R. Kaplan

Static self-consistent methods usually allow to determine the most probable fission fragments mass asymmetry. We have applied random neck rupture mechanism to the nuclei in the configuration at the end of fission paths. Fission fragment…

Nuclear Theory · Physics 2015-02-20 M. Warda , A. Zdeb

The phenomenological classification of collective quadrupole excitations by means of the Bohr Hamiltonian is reviewed with focus on signatures for triaxility. The variants of the microscopic Bohr Hamiltonian derived by means of the…

Nuclear Theory · Physics 2015-10-28 S. Frauendorf

Basing on the Bohr collective quadrupole Hamiltonian the $A$-dependence of the Grodzins product is derived and the proportionality coefficient for the Grodzins relation is evaluated. The result obtained is in a correspondence with the…

Nuclear Theory · Physics 2021-08-31 R. V. Jolos , E. A. Kolganova

Complex fission phenomena are studied in a unified way. Very general reflection asymmetrical equilibrium (saddle point) nuclear shapes are obtained by solving an integro-differential equation without being necessary to specify a certain…

Nuclear Theory · Physics 2009-11-10 D. N. Poenaru , R. A. Gherghescu , W. Greiner

The large body of experimental data on nuclear fission is analyzed with a semi-empirical ordering scheme based on the macro-microscopic approach and the separability of compound-nucleus and fragment properties on the fission path. We apply…

Nuclear Experiment · Physics 2008-11-26 Karl-Heinz Schmidt , Aleksandra Kelic , Maria Valentina Ricciardi

Collective motion is a manifestation of emergent phenomena in medium-heavy and heavy nuclei. A relatively large number of constituent nucleons contribute coherently to nuclear excitations (vibrations, rotations) that are characterized by…

Nuclear Theory · Physics 2022-03-18 Z. P. Li , D. Vretenar

Recently observed rare heavy ion fusion processes, where the entire available energy is carried away by a single pion, is an example of extreme collectivity in nuclear reactions. We calculate the cross section in the approximation of sudden…

Nuclear Theory · Physics 2008-11-26 Alexander Volya , Scott Pratt , Vladimir Zelevinsky