Hyperfine structure of the metastable 3P2 state of alkaline earth atoms as an accurate probe of nuclear magnetic octupole moments

Abstract

Measuring the hyperfine structure (HFS) of long-lived ${}^3{P}_2$ states of divalent atoms may offer the opportunity of extracting relatively unexplored nuclear magnetic octupole and electric hexadecapole moments. Here, using relativistic many-body methods of atomic structure and the nuclear shell model, we evaluate the effect of these higher nuclear moments on the hyperfine structure. We find that the sensitivity of HFS interval measurements in ${}^{87}$Sr needed to reveal the perturbation caused by the nuclear octupole moment is on the order of kHz. Results of similar analyses for ${}^9$Be, ${}^{25}$Mg, and ${}^{43}$Ca are also reported.

arXiv comment11 pages, Phys. Rev. A in press. In v2 added discussion of second-order magnetic-dipole electring-quadrupole correction

References in corpus (6)

• Dual kinetic balance approach to basis set expansions for the Dirac equation
• Hyperfine quenching of the metastable ${}^3{P}_{0,2}$ states in divalent atoms
• Magnetic trapping of metastable ${}^3{P}_2$ atomic strontium
• Lifetime measurement of the ^3P_2 metastable state of strontium atoms
• Combined CI+MBPT calculations of energy levels and transition amplitudes in Be, Mg, Ca, and Sr
• Application of the dual-kinetic-balance sets in the relativistic many-body problem of atomic structure

Cited by in corpus (27)

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• Observation of the nuclear magnetic octupole moment of ${}^{173}$Yb from precise measurements of hyperfine structure in the ${{}^{3}P}_2$ state
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• Reevaluation of the nuclear electric quadrupole moment for 87Sr by hyperfine structures and relativistic atomic theory
• Fine and hyperfine splitting of the low-lying states of ${}^9$Be
• Observation of the Nuclear Magnetic Octupole Moment of 87Rb from Spectroscopic Measurements of Hyperfine Intervals
• Observation of the distribution of nuclear magnetization in a molecule
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• Hyperfine coupling constants of the cesium $7D_{5/2}$ state measured up to the octupole term
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• Absolute frequency measurements on the $5s5p^3$P${}_0\to 5s6d^3$D${}_1$ transition in strontium
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