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- W3086968975 abstract "Precision spectroscopy of ${mathrm{Li}}^{+}$ is a promising testing ground for bound-state quantum electrodynamics (QED) and for measurements of nuclear properties such as the Zemach radius. We investigate the hyperfine and fine-structure splittings of the $2phantom{rule{0.16em}{0ex}}^{3}S_{1}$ and $2{phantom{rule{0.16em}{0ex}}}^{3}{P}_{J}$ states of $^{7}mathrm{Li}^{+}$ using saturated fluorescence spectroscopy based on a $ensuremath{sim}460phantom{rule{0.16em}{0ex}}mathrm{eV}$ metastable ion beam. We measure in particular the $2phantom{rule{0.16em}{0ex}}^{3}S_{1}--2phantom{rule{0.16em}{0ex}}^{3}P_{J}$ transitions in $^{7}mathrm{Li}^{+}$. With a triple nested loop scanning method, the long-term drift and systematic uncertainties are reduced or eliminated, resulting in a total uncertainty of less than 100 kHz. Our results are in good agreement with QED calculations. For the hyperfine splittings of $2phantom{rule{0.16em}{0ex}}^{3}S_{1}$, our measured values have a similar accuracy to previous measurements and theoretical calculations. For the $2{phantom{rule{0.16em}{0ex}}}^{3}{P}_{J}$ fine and hyperfine splittings, our measured results are one order of magnitude more accurate than those of previous measurements and have a similar accuracy to the theoretical values. The measurements lay the foundation for future work on the ${mathrm{Li}}^{+}$ isotopes and their theoretical interpretation in terms of nuclear charge radii and the Zemach radii." @default.
- W3086968975 created "2020-09-21" @default.
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- W3086968975 date "2020-09-14" @default.
- W3086968975 modified "2023-10-18" @default.
- W3086968975 title "Probing atomic and nuclear properties with precision spectroscopy of fine and hyperfine structures in the <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mmultiscripts><mml:msup><mml:mrow><mml:mi>Li</mml:mi></mml:mrow><mml:mo>+</mml:mo></mml:msup><mml:mprescripts /><mml:none /><mml:mn>7</mml:mn></mml:mmultiscripts></mml:math> ion" @default.
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- W3086968975 doi "https://doi.org/10.1103/physreva.102.030801" @default.
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