Comparative studies of dipole polarizabilities in Sr${}^{+}$, Ba${}^{+}$ and Ra${}^{+}$ and their applications to optical clocks

Abstract

Static dipole polarizabilities are calculated in the ground and metastable states of Sr${}^{+}$, Ba${}^{+}$ and Ra${}^{+}$ using the relativistic coupled-cluster method. Trends of the electron correlation effects are investigated in these atomic ions. We also estimate the Stark and black-body radiation shifts from these results for these systems for the transitions proposed for the optical frequency standards and compare them with available experimental data.

10 pages, 1 figure

References in corpus (6)

• Blackbody-radiation shift in a 88Sr+ ion optical frequency standard
• Excitation energies, polarizabilities, multipole transition rates, and lifetimes of ions along the francium isoelectronic sequence
• Investigations of Ra${}^{+}$ properties to test possibilities of new optical frequency standards
• Theoretical study of lifetimes and polarizabilities in Ba+
• Production of short lived radioactive beams of radium
• Accurate determination of the electric dipole matrix elements, lifetimes, polarizabilities and light-shift ratios in Ba+ and Ra+

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• Annexing magic and tune-out wavelengths to the clock transitions of the alkaline-earth metal ions
• Suppression of clock shifts at field-insensitive transitions
• Finite field calculations of static polarizabilities and hyperpolarizabilities of In${}^{+}$ and Sr
• Dispersion coefficients for the interactions of the alkali and alkaline-earth ions and inert gas atoms with a graphene layer
• Estimation of BBR shift due to Stark effect for the Microwave ${}^{113}$Cd${}^{+}$ Ion Clock
• Relativistic semiempirical-core-potential calculations in Ca${}^{+}$, Sr${}^{+}$, and Ba${}^{+}$ ions on Lagrange meshes
• Direct measurement of the $7s{}^2{S}_{1/2}\to$ $7p{}^2{P}_{3/2}$ transition frequency in ${}^{226}$Ra${}^{+}$
• Cold collisions between alkali and alkaline-earth hetero nuclear atom-ion system Li + Ba${}^{+}$
• Theoretical characterisation of the barium II and radium II ions
• Investigating Roles of Triple Excitations for High-precision Determination of Clock Properties of Alkaline Earth Metal Singly Charged Ions