[en] Full text: Low-lying excited states of nuclei are divided into single-particle and collective states in the adiabatic approximation. As known the latter can be divided into the β- and γ-vibrational levels and rotational levels. The above approximation is applicable to the even-even nuclei because their spectrum of the single-particle excitations is separated from the ground state by a gap of 1 to 2 MeV. For the odd nuclei, the energy of single-particle excitations is of the same order of magnitude as the rotational energy and the energy of vibrations of the nuclear surface. Therefore, the separation of the single-particle excitations from the total excitation of a nucleus is not well justified.An odd-mass nucleus is often considered as a system consisting of a core and an external nucleon moving in its field. The interplay between the collective and single-particle states is taken into account in this work. It is important because the high-spin excited states are included in the present consideration. Excited state energies calculated in the framework of the non-adiabatic approach for the deformable odd nuclei are compared with the existing experimental data for the ¹⁵⁷Ho nucleus. Predicted values of the quadrupole moments and E2-transition probabilities are also presented for this nucleus. (authors)

[en] Excited states of deformable odd ¹⁵⁷Ho nucleus are investigated with taking into account the interaction of collective and single-particle states. Possibility of describing excited state energies of this nucleus within non-adiabatic approach is considered, including states up to high spins. (authors)

[en] Full text: Our recent works concerned to the study of excited states of deformed non-axial nuclei and to the nuclei with small non-axiality. These investigations explained a number of regularities in the spectra of deformed odd nuclei. It has been supposed that the state of outer nucleon is not changed by excitation, i.e. angular momentum of outer nucleon is conserved. Spin and parity of ground states of nuclei are determined by the spin of outer nucleon in this case. However states outer nucleon can change by excitation of the core and spins and parity of ground states should directly follow from the calculations in this case and depend on the parameters of the model. Here non-adiabatic model of the deformable odd non-axial nuclei is proposed. Outer nucleon moves in the rotating and oscillating (longitudinally and transversely) non-spherical field of the core. There is interaction between outer nucleon and a core and it is changed by excitation of the core. Quantum characteristics of the excited states of deformable odd nuclei are calculated up to high spins. Comparisons of calculated values of excited states energies with experimental ones for the nuclei ¹⁵³Eu, ¹⁵⁵Gd, ¹⁵⁷Gd, ¹⁸¹Re and ¹⁸³Re show that he model satisfactorily describes spectrum of deformable odd nuclei including states up to high spins

[en] Rotational single-particle and vibrational excited states of deformable odd nuclei with small nonaxiality are investigated with allowance for the interactions of collective and single-particle states. The ratios of reduced probabilities of E2 transitions and quadrupole moments for deformable odd nuclei with small nonaxiality are calculated up to high-spin states. (author)

No abstract available

[en] Excited states deformable odd nuclei with small non-axiality are investigated with allowance for the interaction of collective and single-particle states. Possibility of describing excited states energies of deformable odd nuclei with small non-axiality within non-adiabatic theory of odd nuclei, including states up to high spins, is considered. Exponential type of potential is used for the longitudinal vibrations of the surface of nucleus. Expression for the collective-single-particle excited states of deformable odd nuclei with small non-axiality is obtained. Theoretical calculations of the ratios of the excited states energies to the energy of first excited level are compared with the experimental data for the nuclei ^I51Pm, ^161,I63Dy and ^I67Er

[en] Rotationally single-particle and vibrational excitations of deformable odd non-axial odd nuclei are investigated with allowance for the interaction of collective and single-particle states. The ratios of excitation energies, of reduced probabilities of E2 transitions, and of quadrupole moments for deformable non-axial odd nuclei are calculated up to high-spin states. (author)

[en] Rotationally single-particle and vibrational excitations of deformable odd nuclei with small nonaxiality are investigated with allowance for the interaction of collective and single-particle states. The ratios of excitation energies, of reduced probabilities of E2 transitions, and of quadrupole moments for deformable odd nuclei with small nonaxiality are calculated up to high-spin states. (author)

[en] Full text: Recently we have developed non-adiabatic approach of deformed odd nuclei with small triaxiality [1]. In this work exponential type of potential for the longitudinal vibrations of the nuclear surface has been used and angular momentum of external nucleon has been considered as good quantum number. This approach has explained a number of regularities observed in the spectra of some deformed nuclei with small triaxiality. Here we apply the same approach for the investigation of the excited states of two deformed ¹⁵⁵Eu and ¹⁶¹Tm nuclei. Values of the parameters are determined from the fitting of the calculated spectra of above nuclei with their experimental counterparts. Then the same values are used for the calculation of reduced E2-transition probabilities and quadrupole moments of the excited states of the deformed odd ¹⁵⁵Eu and ¹⁶¹Tm nuclei. Comparison of calculated values of the spectra, the reduced E2-transition probabilities inside the rotationally - single-particle band and the quadrupole moments of the excited states of deformed odd ¹⁵⁵Eu and ¹⁶¹Tm nuclei with experimental data shows that the model satisfactorily describes above properties of nuclei through only three parameters of the theory, including states up to high spins. (author)

[en] Rotationally single-particle and vibrational excitations of deformable nonaxial odd nuclei are investigated with allowance for the interaction of collective and single-particle states. The ratios of excitation energies, of reduced probabilities of E2 transitions, and of quadrupole moments for deformed nonaxial odd nuclei are calculated up to high-spin states