Investigations of Ra${}^{+}$ properties to test possibilities of new optical frequency standards

Abstract

The present work tests the suitability of the narrow transitions $7s{}^2{S}_{1/2}\to 6d^2{D}_{3/2}$ and $7s^2{S}_{1/2}\to 6d^2{D}_{5/2}$ in Ra${}^{+}$ for optical frequency standard studies. Our calculations of the lifetimes of the metastable $6d$ states using the relativistic coupled-cluster theory suggest that they are sufficiently long for Ra${}^{+}$ to be considered as a potential candidate for an atomic clock. This is further corroborated by our studies of the hyperfine interactions, dipole and quadrupole polarizabilities and quadrupole moments of the appropriate states of this system.

arXiv commentLatex files, 5 pages, 1 figure

References in corpus (6)

• Calculations of parity nonconserving s-d transitions in Cs, Fr, Ba II, and Ra II
• Evaluation of the ultimate performances of a Ca+ single-ion frequency standard
• A New Approach To Relativistic Gaussian Basis Functions: Theory And Applications
• Relativistic Coupled-Cluster Theory of Atomic Parity Nonconservation: Application to ${}^{137}$Ba${}^{+}$
• Precision measurement of light shifts in a single trapped Ba${}^{+}$ ion
• Ab initio determination of the lifetime of the $6^2{P}_{3/2}$ state f or ${}^{207}P{b}^{+}$ by relativistic many-body theory

Cited by in corpus (20)

• Standard Model tests with trapped radioactive atoms
• Calculation of parity nonconserving amplitude and other properties of Ra+
• Multipolar Black Body Radiation Shifts for the Single Ion Clocks
• Comparative studies of dipole polarizabilities in Sr${}^{+}$, Ba${}^{+}$ and Ra${}^{+}$ and their applications to optical clocks
• Relativistic Equation of Motion Coupled-Cluster Method: Application to the closed-shell atomic systems
• Laser Cooling of Radium Ions
• Forbidden M1 and E2 transitions in monovalent atoms and ions
• Parity Nonconservation in Odd-isotopes of Single Trapped Atomic Ions
• Compilation of spectroscopic data of Radium (Ra I and Ra II)
• Ab initio determination of polarizabilities and van der Waals coefficients of Li atoms using the relativistic CCSD(T) method
• Quadruply Ionized Barium as a Candidate for a High-Accuracy Optical Clock
• Isotope Shifts of the $6d{}^2$D${}_{3/2}$ - $7p{}^2$P${}_{1/2}$ Transition in Trapped Short-Lived ${}^{209-214}$Ra${}^{+}$
• Annexing magic and tune-out wavelengths to the clock transitions of the alkaline-earth metal ions
• Dispersion coefficients for the interactions of the alkali and alkaline-earth ions and inert gas atoms with a graphene layer
• Ba${}^{+}$ Quadrupole Polarizabilities: Theory versus Experiment
• Measurement of the $7p{}^2{P}_{3/2}$ state branching fractions in ${\mathrm{Ra}}^{+}$
• Laser cooling and trapping of ${}^{224}$Ra${}^{+}$
• Measurement of the Ra${}^{+}$ $7p$ ${}^2{P}_{3/2}$ state lifetime
• Theoretical characterisation of the barium II and radium II ions
• Lifetimes of the Metastable $6\mathrm{d}{}^2{\mathrm{D}}_{5/2}$ and $6\mathrm{d}{}^2{\mathrm{D}}_{3/2}$ States of Ra${}^{+}$