The most successful reaction type for the production of heavy nuclei is fusion of two colliding nuclei to form an excited compound nucleus, which subsequently deexcites by evaporation of few neutrons [1]. However, this so called fusion-evaporation reaction is strongly dominated by the fusion–fission reaction which is the main deexcitation channel of the excited compound nuclei [2]. Thus, the in...

Superheavy isotopes are highly neutron rich nuclei in the vicinity of neutron drip-line, stabilized by shell effect against the instability due to repulsive component of nuclear force, analogous to superheavy elements similarly stabilized against Coulomb instability. Here we discuss the stability and fission decay properties of such nuclei in the Th region and show that they are stable against ...

The understanding of the fusion probability is particular importance to reveal mechanism producing superheavy elements. We present a microscopic study compound nucleus formation by combining time-dependent density functional theory, coupled-channels approach, and dynamical diffusion models. cross sections for cold-fusion reactions $^{48}$Ca+$^{208}$Pb, $^{50}$Ti+$^{208}$Pb, $^{54}$Cr+$^{208}$Pb...

The dependence of fusion cross section on the isotopic composition of colliding nuclei is analysed within the dinuclear system concept for compound nucleus formation. Probabilities of fusion and surviving probabilities, ingredients of the evaporation residue cross sections, depend decisively on the neutron numbers of the dinuclear system. Evaporation residue cross sections for the production of...

We have constructed empirical formulae for the fusion and interaction barriers using a large number of experimental values chosen randomly from literature available till date. The obtained been compared with different model predictions based on proximity, Woods–Saxon double folding potentials along several formulas, time-dependent Hartree–Fock theories results. comparison allows us to find best...

Relativistic quantum mechanics predicts that when the charge of a superheavy atomic nucleus surpasses a certain threshold, the resulting strong Coulomb field causes an unusual atomic collapse state; this state exhibits an electron wave function component that falls toward the nucleus, as well as a positron component that escapes to infinity. In graphene, where charge carriers behave as massless...

The formation of $\ensuremath{\alpha}$ particles on nuclear surfaces has remained a fundamental problem since the dawn physics. This $\ensuremath{\alpha}$-particle strongly affects $\ensuremath{\alpha}$-decay lifetimes heavy and superheavy elements, level scheme light nuclei, synthesis elements in stars. However, despite its importance, medium-mass nuclei is seldom investigated. Based $^{48}\ma...

Dynamical reaction theory is presented for synthesis of superheavy elements. Characteristic features of formation and surviving are discussed, which combinedly determine final residue cross sections of superheavy elements. Preliminary results on Z=114 are also given.

The synthesis of superheavy elements is analysed within the dinuclear system concept of compound nucleus formation. The perspectives for using radioactive beams in complete fusion reactions are discussed. The existing fusion models are distinguished by the choice of the relevant collective degree of freedom which is mainly responsible for the complete fusion. For example, many models assume a m...