We have investigated the low-lying collective states and electromagnetic transitions in 94Mo within the framework of the interacting boson model. The influence of model parameters on the energy levels and electromagne...We have investigated the low-lying collective states and electromagnetic transitions in 94Mo within the framework of the interacting boson model. The influence of model parameters on the energy levels and electromagnetic properties has been investigated. The analysis of the obtained results and the parameter values predict that the 23+state is the lowest mixed symmetry state with pure F = Fmax - 1 in this nucleus. The calculated results predicate that the 25+ (two-Q-phonon) mixed symmetry state is closed to the J = 2+ at 2.870 MeV in the experimental data, and the 2.965 MeV state is the lowest mixed symmetry with J = 3+.展开更多
Excitation energies and clcctromagnetic transition strengths in even-even 96-108Mo muclei have been dcscribed systcmatically by using the proton-neutron interacting boson model (IBM-2). It appears that the properties ...Excitation energies and clcctromagnetic transition strengths in even-even 96-108Mo muclei have been dcscribed systcmatically by using the proton-neutron interacting boson model (IBM-2). It appears that the properties oflow-lying levels in these isotopes, for which the comparison between experimcnt and theory is possible, can be satisfac-torily described by the IBM-2 model, provided proper account is taken of the presence at low energy of statcs having amixed-symmetry character. It seems possible to identify, in each isotope, a few states having such a character, the lowestones being either 2+2 or 2+3 levels. It is found that these nuclei are in the transition from U(5) to SU(3).展开更多
文摘We have investigated the low-lying collective states and electromagnetic transitions in 94Mo within the framework of the interacting boson model. The influence of model parameters on the energy levels and electromagnetic properties has been investigated. The analysis of the obtained results and the parameter values predict that the 23+state is the lowest mixed symmetry state with pure F = Fmax - 1 in this nucleus. The calculated results predicate that the 25+ (two-Q-phonon) mixed symmetry state is closed to the J = 2+ at 2.870 MeV in the experimental data, and the 2.965 MeV state is the lowest mixed symmetry with J = 3+.
文摘Excitation energies and clcctromagnetic transition strengths in even-even 96-108Mo muclei have been dcscribed systcmatically by using the proton-neutron interacting boson model (IBM-2). It appears that the properties oflow-lying levels in these isotopes, for which the comparison between experimcnt and theory is possible, can be satisfac-torily described by the IBM-2 model, provided proper account is taken of the presence at low energy of statcs having amixed-symmetry character. It seems possible to identify, in each isotope, a few states having such a character, the lowestones being either 2+2 or 2+3 levels. It is found that these nuclei are in the transition from U(5) to SU(3).
