Spectroscopy on a single trapped 137Ba+ ion for nuclear magnetic octupole moment determination

Abstract

We present precision measurements of the hyperfine intervals in the 5D3/2 manifold of a single trapped Barium ion, 137 Ba+ . Measurements of the hyperfine intervals are made between mF = 0 sublevels over a range of magnetic fields allowing us to interpolate to the zero field values with an accuracy below a few Hz, an improvement on previous measurements by three orders of magnitude. Our results, in conjunction with theoretical calculations, provide a 30-fold reduction in the uncertainty of the magnetic dipole (A) and electric quadrupole (B) hyperfine constants. In addition, we obtain the magnetic octupole constant (C) with an accuracy below 0.1 Hz. This gives a subsequent determination of the nuclear magnetic octupole moment, Ω, with an uncertainty of 1% limited almost completely by the accuracy of theoretical calculations. This constitutes the first observation of the octupole moment in 137 Ba+ and the most accurately determined octupole moment to date.

4 pages, 3 figures

References in corpus (2)

• Hyperfine structure of the metastable 3P2 state of alkaline earth atoms as an accurate probe of nuclear magnetic octupole moments
• Nuclear magnetic octupole moment and the hyperfine structure of the $5D_{3/2,5/2}$ states of the Ba${}^{+}$ ion

Cited by in corpus (12)

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• Atomic Properties of Lu${}^{+}$
• Precision measurements on the ${}^{138}$Ba${}^{+}$ $6s^2{S}_{1/2}-5d^2{D}_{5/2}$ clock transition
• Experimental determination of the nuclear magnetic octupole moment of ${}^{137}$Ba${}^{+}$ ion
• Study of the magnetic octupole moment of ${}^{173}$Yb using collinear laser spectroscopy
• Precision measurement of the magnetic octupole moment in ${}^{45}$Sc as a test for state-of-the-art atomic- and nuclear-structure theory
• Observation of the nuclear magnetic octupole moment of ${}^{173}$Yb from precise measurements of hyperfine structure in the ${{}^{3}P}_2$ state
• Suppression of clock shifts at field-insensitive transitions
• Radio frequency spectroscopy measurement of the Landé g factor of the 5D5/2 state of Ba+ with a single trapped ion
• Reliability test for the experimental results of electric quadrupole hyperfine structure constants and new assessment of nuclear quadrupole moments in ${}^{135,137}$Ba
• Sub-Doppler Cavity Cooling Beyond The Lamb-Dicke Limit
• Laser Cooling and Hyperfine Measurements of Radium-225 Ions