[en] It was believed that the value of the quadrupole moment of the deuteron Q is too large to be fitted by realistic local potential models. Two simple local potential models for the deuteron with large Q are considered. (orig.)

[en] The hyperfine structure of 21 lines in the Gd-II spectrum was measured with a photoelectric Fabry-Perot-spectrometer. From these results tje electric quadrupole moment of ¹⁵⁷Gd was determined. (WL)

[en] The overview of experimental data on charge radii differences between the ground and the high-spin isomeric states is presented. Methods: of high-resolution laser spectroscopy were used for measurements. Charge radii differences obtained in two ways are compared: from measurements of isomeric shifts of atomic levels of nuclei under study and from measurements of quadrupole moments in both states under the assumption that the radii differences are determined by the difference of their quadrupole deformations. Isomers formed at a rupture of one or several nucleon pairs and isomers with the configuration of the odd neutron 1h_11/2 for the nuclear region Cd-Ba and 1i_13/2 for the region Hg-Pb are considered. Observed deviations of the above charge radii differences for isomeric states of a different nature are discussed.

[en] We discuss the deuteron wave functions at low momenta and find a similar behavior of the wavefunctions derived from the Reid-potential and from the meson theoretical potentials of the Nijmegen and Paris group. This is compared with realists wave functions derived from separable potentials

[en] It is demonstrated that the deuteron D/S ratio and quadrupole moment are strongly OPEP dominated. Corrections to this picture are nearly model independent. The analysis indicates strongly a pointlike πNN coupling. The investigation provides the most quantitative demonstration of pionic effects in nuclear physics

[en] The shapes of light nuclei are studied within density-functional theory. The Kohn-Sham method and the local-density approximation are used. No symmetry restrictions are imposed. A parallel study is made of monovalent atomic clusters described on the jellium model. The shapes obtained for nuclei with Z=N=2-22 show a striking similarity to those of atomic clusters of an equal number of valence electrons. Moments of inertia, when suitably normalized, are virtually identical. The calculated nuclear quadrupole moments are found insensitive to the effective interaction and in good agreement with experiment. Similar shape coexistence is established in both systems. (orig.)

[en] The intrinsic quadrupole moment Q₀ of superdeformed rotational bands in A∼150 nuclei depends on the associated single-particle configuration. We have derived an empirical formula based on the additivity of effective quadrupole moments of single-particle orbitals that describes existing measurements from ¹⁴²Sm to ¹⁵²Dy . To further test the formula, the predicted Q₀ moments for two superdeformed bands in ¹⁴⁶Gd of 14.05 eb were confronted with a new measurement yielding 13.9±0.4 eb and 13.9±0.3 eb , respectively. This excellent agreement provides empirical evidence of extreme single-particle behavior in highly deformed, collective systems

No abstract available

[en] A simple two level mixing model is employed to perform a Monte Carlo simulation for the decay out of the superdeformed bands SD-1 and SD-3 in ¹⁹⁴Hg. An exponential spin dependence of the interaction between superdeformed and normally deformed states is applied. Average intraband intensities and transition quadrupole moments are determined at each spin. The simple two level mixing approach is consistent with more sophisticated theoretical models. The Monte Carlo approach allows one to determine probabilities for the reproduction of the experimental intensity patterns and transition quadrupole moments. An interaction of v∼0.5 eV was determined for spin 12ℎ in the yrast SD band. The results show that the decay out of the yrast and excited SD bands in ¹⁹⁴Hg can be described with the same spin dependent interaction

[en] We calculate the corrections from an admixture of six-quark bags to the static multipole moments of the deuteron. These corrections are determined mainly by the radius b of the equivalent hadron bag. The quark corrections are most important in the calculation of the quadrupole moment of the deuteron and are approx. <10% for b = 1.4 F and a D-wave admixture in the deuteron P/sub D/--4 --4.5%