Polarizabilities of Si^{2+}: a benchmark test of theory and experiment

Abstract

We have calculated electric-dipole polarizabilities of the 3s^2 ^1S_0, 3s3p ^3P_0, and 3s3p ^1P_1 states of the Si^{2+} ion using recently developed configuration interaction + all-order method. Detailed evaluation of the uncertainties of the final results is carried out. Our value for the ground state electric-dipole polarizability 11.670(13) a.u. is in excellent agreement with the resonant excitation Stark ionization spectroscopy value 11.669(9) a.u. [Komara et al., J. Phys. B 38, 87 (2005); Mitroy, Phys. Rev. A 78, 052515 (2008)]. This work represents the most precise benchmark test to date of theory and experiment in divalent atoms. The near cancellation of the ns^2 ^1S_0 ground state and the lowest nsnp ^3P_0 polarizabilities previously observed in B+, Al+, In+, Tl+, and Pb^{2+} is also found in Si^{2+} ion.

6 pages

References in corpus (9)

• Multipolar theory of black-body radiation shift of atomic energy levels and its implications for optical lattice clocks
• Trapping of Neutral Mercury Atoms and Prospects for Optical Lattice Clocks
• Development of a configuration-interaction + all-order method for atomic calculations
• Alkaline-Earth-Metal Atoms as Few-Qubit Quantum Registers
• Theoretical study of lifetimes and polarizabilities in Ba+
• Level-crossing spectroscopy of the 7, 9, and 10D_5/2 states of 133Cs and validation of relativistic many-body calculations of the polarizabilities and hyperfine constants
• Properties of Fr-like Th3+ from spectroscopy of high-L Rydberg levels of Th2+
• Polarizabilities of the Mg${}^{+}$ and Si${}^{3+}$ ions
• Polarizabilities of Rn-like Th4+ from rf spectroscopy of Th3+ Rydberg levels

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• Relativistic all-order calculations of Th, Th${}^{+}$ and Th${}^{2+}$ atomic properties
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• Relativistic all-order many-body calculation of energies, wavelengths, and $M1$ and $E2$ transition rates for the $3d^n$ configurations in tungsten ions
• Thallium 7p lifetimes derived from experimental data and ab initio calculations of scalar polarizabilities
• Study of quadrupole polarizabilities with combined configuration interaction and coupled-cluster method
• Blackbody radiation shift of B${}^{+}$ clock transition
• Ab Initio Calculations of the Static and Dynamic Polarizability of BaOH