Root-mean-square charge radii are discussed in terms of spherical Energy Density Functional (EDF) models corrected for quadrupole deformations. Comparisons between experiment and theory made the absolute all even-even nuclei, isotonic shift cadmium tin isotopes, isotopic shifts calcium isotopes nuclei with $ N=28 $. We conclude that data well described this approach, except sharp rise just afte...

We address some properties of the quadrupole-quadrupole (Q · Q) interaction in nuclear studies. We first consider how to restore SU (3) symmetry even though we use only coordinate and not momentum terms. Using the Hamil

...Abstract The energy release Ls on the surface of a neutron star (NS) with a weak magnetic field and the energy release Ld in the surrounding accretion disk depend on two independent parameters that determine its state (for example, mass M and cyclic rotation frequency f) and is proportional to the accretion rate. We derive simple approximation formulas illustrating the dependence of the effi...

Shifts from the expected nuclear magnetic resonance frequencies of antimony and bismuth donors in silicon of greater than a megahertz are observed in electrically detected magnetic resonance spectra. Defects created by ion implantation of the donors are discussed as the source of effective electric field gradients generating these shifts via quadrupole interaction with the nuclear spins. The ex...

A solid-state 17O NMR 1H-decoupled double angle rotation (DOR) study of monosodium l-glutamate monohydrate (l-MSG) is reported. It is shown that all eight inequivalent sites can be resolved with DOR line widths ( approximately 65 Hz) approximately 120 times narrower than those in the MAS spectrum. The lines are tentatively assigned on the basis of their behavior under proton decoupling and the ...

We numerically evaluate the expected performances of an optical frequency standard at 729 nm based on a single calcium ion. The frequency stability is studied through the Allan deviation and its dependence on the excitation method (single Rabi pulse or two Ramsey pulses schemes) and the laser linewidth are discussed. The minimum Allan deviation that can be expected is estimated to σ y (τ) ≈ 2.5...

We investigate the Stark effect for spectral transitions between low-lying levels of atoms and ions. We find that often a strong cancellation of the shifts of the lower and upper levels occurs, resulting in a significant reduction in the shift. For accurate calculations, therefore, one has to account for the influence of highprincipal-quantum-number and continuum levels. As examples, the shifts...

For high current synchrotron SIS it is crucial to improve the multiturn injection efficiency. We study active emittance exchange due to a second order (skew quadrupole) difference resonance which is modified by the presence of space charge. We start from an analytical expression for the coherent tune shift of this resonance and compared it with computer simulation for the SIS synchrotron lattic...

We experimentally investigate an optical frequency standard based on the 467 nm (642 THz) electric-octupole reference transition (2)S(1/2)(F=0)→(2)F(7/2)(F=3) in a single trapped (171)Yb(+) ion. The extraordinary features of this transition result from the long natural lifetime and from the 4f(13)6s(2) configuration of the upper state. The electric-quadrupole moment of the (2)F(7/2) state is me...