579 citations · 1.3k across the 26 of their papers we have counts for
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The hyperfine anomaly in mercury and test of the Moskowitz-Lombardi rule
J. Vandeleur, G. Sanamyan, B. M. Roberts +1
The Moskowitz-Lombardi rule gives a simple relation between the magnetic moment of an atomic nucleus and the effect of its radial distribution on the hyperfine structure - the magn…
Vacuum polarization corrections to hyperfine structure in many-electron atoms
J. C. Hasted, C. J. Fairhall, O. R. Smits +2
We perform a theoretical study of vacuum polarization corrections to the hyperfine structure in many-electron atoms. Calculations are performed for systems of interest for precisio…
Smallness of the nuclear polarization effect in the hyperfine structure of heavy muonic atoms as a stimulus for next-generation experiments
J. Vandeleur, G. Sanamyan, O. R. Smits +3
There is renewed interest in studies of muonic atoms, which may provide detailed information on nuclear structure. A major limiting factor in the interpretation of measurements is…
QED radiative corrections to electric dipole amplitudes in heavy atoms
C. J. Fairhall, B. M. Roberts, J. S. M. Ginges
We use the radiative potential method to perform a detailed study of quantum electrodynamics (QED) radiative corrections to electric dipole (E1) transition amplitudes in heavy alka…
Electric dipole transition amplitudes for atoms and ions with one valence electron
B. M. Roberts, C. J. Fairhall, J. S. M. Ginges
Motivated by recent measurements for several alkali-metal atoms and alkali-metal-like ions, we perform a detailed study of electric dipole (E1) transition amplitudes in K, Ca+, Rb,…
The Bohr-Weisskopf effect: from hydrogenlike-ion experiments to heavy-atom calculations of the hyperfine structure
B. M. Roberts, P. G. Ranclaud, J. S. M. Ginges
In this paper we study the influence of electron screening on the Bohr-Weisskopf (BW) effect in many-electron atoms. The BW effect gives the finite-nucleus magnetization contributi…
The hyperfine anomaly in heavy atoms and its role in precision atomic searches for new physics
B. M. Roberts, J. S. M. Ginges
We report on our calculations of differential hyperfine anomalies in the nuclear single-particle model for a number of atoms and ions of interest for studies of fundamental symmetr…
Nuclear magnetic moments of francium 207-213 from precision hyperfine comparisons
B. M. Roberts, J. S. M. Ginges
We report a fourfold improvement in the determination of nuclear magnetic moments for neutron-deficient isotopes of francium-207--213, reducing the uncertainties from 2% for most i…
Correlation trends in the hyperfine structure for Rb, Cs, Fr and high-accuracy predictions for hyperfine constants
S. J. Grunefeld, B. M. Roberts, J. S. M. Ginges
We have performed high-precision calculations of the hyperfine structure for n 2S_1/2 and n 2P_1/2 states of the alkali-metal atoms Rb, Cs, and Fr across principal quantum number n…
Screening of oscillating external electric field in atoms
V. A. Dzuba, J. C. Berengut, J. S. M. Ginges +1
We study the screening of a homogeneous oscillating external electric field in noble-gas atoms using atomic many-body calculations. At zero frequency of the oscillations ($ω=…
Ground-state hyperfine splitting for Rb, Cs, Fr, Ba^+, and Ra^+
J. S. M. Ginges, A. V. Volotka, S. Fritzsche
We have systematically investigated the ground-state hyperfine structure for alkali-metal atoms ^{87}Rb, ^{133}Cs, ^{211}Fr and alkali-metal-like ions ^{135}Ba^+, ^{225}Ra^+, which…
Testing atomic wave functions in the nuclear vicinity: the hyperfine structure with empirically-deduced nuclear and quantum electrodynamic effects
J. S. M. Ginges, A. V. Volotka
Calculations of the magnetic hyperfine structure rely on the input of nuclear properties -- nuclear magnetic moments and nuclear magnetization distributions -- as well as quantum e…
Spectra of barium, radium, and element 120; application of the combined correlation potential, singles-doubles, and configuration interaction ab initio method
J. S. M. Ginges, V. A. Dzuba
We apply a version of the recently developed approach combining the correlation potential, linearized singles-doubles coupled-cluster, and the configuration interaction methods to…
Calculations of the spectra of superheavy elements E119 and E120+
T. H. Dinh, V. A. Dzuba, V. V. Flambaum +1
High-precision calculations of the energy levels of the superheavy elements E119 and E120+ are presented. Dominating correlation corrections beyond relativistic Hartree-Fock are in…
Atomic electric dipole moments of He and Yb induced by nuclear Schiff moments
V. A. Dzuba, V. V. Flambaum, J. S. M. Ginges
We have calculated the atomic electric dipole moments (EDMs) d of ^3He and ^{171}Yb induced by their respective nuclear Schiff moments S. Our results are d(He)= 8.3x10^{-5} and d(Y…
Calculations of energy levels and lifetimes of low-lying states of barium and radium
V. A. Dzuba, J. S. M. Ginges
We use the configuration interaction method and many-body perturbation theory to perform accurate calculations of energy levels, transition amplitudes, and lifetimes of low-lying s…
The radiative potential method for calculations of QED radiative corrections to energy levels and electromagnetic amplitudes in many-electron atoms
V. V. Flambaum, J. S. M. Ginges
We derive an approximate expression for a "radiative potential" which can be used to calculate QED strong Coulomb field radiative corrections to energies and electric dipole (E1) t…
Violations of fundamental symmetries in atoms and tests of unification theories of elementary particles
J. S. M. Ginges, V. V. Flambaum
High-precision measurements of violations of fundamental symmetries in atoms are a very effective means of testing the standard model of elementary particles and searching for new…
Calculation of parity and time invariance violation in the radium atom
V. A. Dzuba, V. V. Flambaum, J. S. M. Ginges
Parity (P) and time (T) invariance violating effects in the Ra atom are strongly enhanced due to close states of opposite parity, the large nuclear charge Z and the collective natu…