Etude des énergies nucléaires des noyaux excités appartenant à la symétrie z(5) (192,194,196pt)

Abstract

In this thesis, we propose a model that allows to determine the nuclear energies of the excited nuclei belonging to the Z(5) symmetry. To do this, we identified this isotope symmetry 192,194,196P t because they have some similar properties namely electrical conductivity, malleability, ductility and all belong to the family of transition metals. Then we demonstrated that this model is based on the CKMP and KP RSP describing carefully deformations and nuclei interactions occurring in the atomic nucleus. These physical phenomena related to the movements supra-cities were materialized by the Hamiltonian of Bohr and incorporated into Schrödinger’s mathematical equations, the resolution of which was made by the AIM associated with the Pekeris approximation for the deformations and the method of factorization for nuclear interactions. It appeared that the transitions of a level i to a level j are faster when one refers to computed excitation energies (10+ → 12+). Plus the σ standard deviations for the 196P t are well below experimental values and those of Z(5), which is why the parameter q is high for 192,194P t, which means that triaxial effect is non-dominant for these nuclide. Then, we can say that the CKMP is better suited to describe the properties of 196P t, because having a structure very close to the limits of the model Z(5) with respect to the isotopes 192,194P t and can be taken as reference to the other models studied so far. Finally, by superimposing the radial and angular energies with those of the literature, one realizes that our energies resulting from KP RSP are always superior to those of the literature, proving that to dissociate two atoms, it will take a little more energy, demonstrating a reinforced stability of the molecule by our model. It goes without saying finally that with the KP RSP, the spring obtained from the mechanical system involved is more rigid and difficult to break.