No abstract available

No abstract available

No abstract available

[en] Short communication; 5 refs.; 1 fig

[en] Kinetic energy dissipation mechanism is considered in deep inelastic heavy-ion collisions. It is shown that the significant part of the kinetic energy loss can be explained by the excitation of the nuclear matter multipole vibrations. The main contribution of the energy dissipation is given by the time dependent heavy-ion interaction potential renormalized due to the nuclear excitations, rather than by the velocity proportional frictional forces

[en] On the basis of a collective Hamiltonian derived within the framework of the nuclear microscopic model, the properties of low collective states of deformed nuclei sup(168, 170, 172)Yb and sup(174, 176)Hf are analyzed. It is shown that consideration within the framework of the Su₃ scheme yields a qualitatively correct description of strongly deformed nuclei. Deviations from the scheme are analyzed

[en] Shell model calculations based on active proton configurations are performed for the nuclei ¹⁴⁶₆₄Gd₈₂ and ¹⁴⁷₆₅Tb₈₂ using a Surface Delta plus a modified quadrupole-quadrupole and octupole-octupole interaction. The energies of the excited states up to J = 16 and J = (27(2)), respectively, are obtained in good agreement with the experimental values. Special attention is paid to the description of those excited states which are interpreted in the particle-core coupling model as 2⁺·particle and 3^-·particle configurations, where the 2⁺ and the 3^- state are the low-lying collective states of ¹⁴⁶Gd and the extra particle of ¹⁴⁷Tb is in one of the 3s₍₁₍₂₎₎, 1h_(11(2)), or 2d₍₃₍₂₎₎ single-particle states

[en] Using Si(Li) β-spectrometer, the internal conversion electrons from the ¹³³La decay were measured and conclusions were made of the multipolarities of a number of γ-transitions. The experimentally obtained ¹³³Ba excited state characteristics are compared with the results of theoretically calculated energies and wave functions of ¹³³Ba levels. The calculations have been performed within the model of interaction of an odd particle with anharmonic vibrational core. A satisfactory agreement is obtained for 13 lowest levels as well as for 12 keV M1-transition probability (B(M1, 3/2sub(1)sup(+) → 1/2sub(1)sup(+))sup(calc.)=0.31 μsub(N)sup(2)), which is l-forbidden in the shell-model

[en] Shell model calculations based on active proton configurations are performed for the nuclei ¹⁴⁴₆₂Sm₈₂ and ¹⁴⁵₆₃Eu₈₂ using a Surface Delta plus a modified quadrupole-quadrupole and octupole-octupole interaction. The energies of the excited states up to J=16 and J=29/2, respectively, are obtained in good agreement with the experimental values. Special attention is paid to the description of those excited states which are interpreted in the phonon-phonon or in the particle-core coupling model as (2⁺·3^-)_J^-, (2⁺·1h_11/2)_J^-, and (3^-·1h_11/2)_J⁺ configurations, where the 2⁺ and the 3^- state are the low lying collective states of ¹⁴⁴Sm

[en] This paper reports that if the projectile velocity is smaller than the Fermi velocity, the main mechanism of nuclear excitation during collision will be the single particle one which is connected with the fast rearrangement of the nuclear mean field. For this reason the consideration of the nuclear collisions in the framework of the TDHF method will be more adequate to the considered problem. However, application of this method requires a significant amount of calculations allowing for the self-consistency of the density and average potential. On the other hand, whether the self-consistency requirement is important for the predictions of the collision dynamics is unclear yet. There are well-known examples when disregarding the self-consistency one can simplify the problem thus getting a deeper insight into the process. This can be exemplified by the nuclear shell model. It means that the task should be formulated in terms of quantities which have macroscopic analogs. In our case these are nucleon density and current operators