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 deformation and the finite-size effects of the fragments and integrating the equations of motion for a three-body system subjected only to Coulomb forces. The initial conditions for the trajectory calculations were derived in the frame of a defo...

The Time-dependent Hartree-Fock (TDHF) theory is applied to the study of heavy ion collisions at energies around the Coulomb barrier. The competition between fusion and nucleon transfer mechanisms is investigated. For intermediate mass systems such as O+Pb, proton transfer favors fusion by reducing the Coulomb repulsion. A comparison with sub-barrier transfer experimental data shows that pairin...

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, Au reactions, those calculations well reproduce the experimental total fission cross sections, and a part of the extra-push phenomena can be explained in terms of the Coulomb excitations to multi-phonon s...

The formation of a di-nuclear system (DNS) during the capture stage of two heavy nuclei can be regarded as the first step of a fusion process. However, with increasing Z of the reaction partners also their Coulomb repulsion is increasing. This can lead to the decay of the DNS before a compound nucleus is formed (quasi-fission (QF)). The velocity filter SHIP enables a background free identificat...

Recent measurements of the positron energy spectrum obtained from inverse beta decay interactions of reactor electron antineutrinos show an excess in the 4 to 6 MeV region relative to current predictions. First-principles calculations of fission and beta decay processes within a typical pressurized water reactor core identify prominent fission daughter isotopes as a possible origin for this exc...

We report the observation of symmetric fission in doubly charged Fe-S cluster anions, [Fe(4)S(4)X(4)](2-)-->2[Fe(2)S(2)X(2)](-) (X=Cl,Br), owing to both Coulomb repulsion and antiferromagnetic coupling. Photoelectron spectroscopy shows that both the parent and the fission fragments have similar electronic structures and confirms the inverted energy schemes due to the strong spin polarization of...

We present the results of measurements of the angular distribution lg7 and Bi of fission fragments produced by irradiation of Au 209 with 11 various heavy ions. The projectiles, B , G'l2, N14, and 016, had energies from a few MeV above the Coulomb barrier to 10.4 MeV per nucleon. The gross features of these results can be explained by use of a model and parameters that have been used by others ...

In super-heavy nuclei, we may expect to discover new phenomena because of the strong Coulomb force. One example is true ternary fission. We study sequential two binary fission 300 120 and 252 Cf that produces three fragments. use Metropolis method estimate probability second The 10 −4 -10− 3 for superheavy nuclei while it 10− 7 −10− 6 heavy actinide nuclei. most probable mass division almost sy...