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The excitation energies and the structure of the low lying states with K π = 8 − , 0 − , 1 − , 2 − , 3 + are calculated based on the quasiparticle phonon model. The results of calculations demonstrate agreement with the existing experimental data and also give information which can be used for planning the experiments.

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The coupled dynamics of the scissors mode and the isovector giant quadrupole resonance are studied using a generalized Wigner function moments method taking into account pair correlations. Equations of motion for angular momentum, quadrupole moment and other relevant collective variables are derived on the basis of the time dependent Hartree-Fock-Bogoliubov equations. Analytical expressions for energy centroids and Nevertheless, this description was not complete, because pairing was not taken into account.It is well known [2], that pairing is very important for the correct quantitative description of the scissors mode. Moreover, its role is crucial for an explanation of the empirically observed deformation dependence of E sc and B(M1) sc .The prediction of the scissors mode was inspired by the geometrical picture of a counterrotating oscillation of the deformed proton density against the deformed neutron density [3,4].Thus, as it is seen from its physical nature, the scissors mode can be observed only in deformed nuclei. Therefore, quite naturally, the question of the deformation dependence of its properties (for example, energy E sc and B(M1) sc value) arises. However, during the first years after its discovery in 156 Gd [5] "nearly all experimental data were limited to nuclei of about the same deformation (δ ≈ 0.20 − 0.25), and the important aspect of orbital M1 strength dependence on δ has not yet been examined", see ref.[6].The first investigations of the δ-dependence of E sc and B(M1) sc were performed by W. Shortly afterwards it was discovered [9,10], that in even-even nuclei the total low-energy magnetic dipole strength is closely related to the collective E2 strength of the 2 + 1 state and, thus, depends quadratically on the nuclear deformation parameter.Later J. Enders et al. [11] made a theoretical analysis of experimental data on the scissors

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