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- W2485093934 abstract "The hyperfine-induced $2s2pphantom{rule{0.3em}{0ex}}^{3}P_{0}--2{s}^{2}phantom{rule{0.3em}{0ex}}^{1}S_{0}$ transition rate for Be-like $^{47}mathrm{Ti}^{18+}$ was recently measured in a storage-ring experiment by Schippers et al. [Phys. Rev. Lett. 98, 033001 (2007)]. The measured value of $0.56(3)phantom{rule{0.3em}{0ex}}{mathrm{s}}^{ensuremath{-}1}$ is almost 60% larger than the theoretical value of $0.356phantom{rule{0.3em}{0ex}}{mathrm{s}}^{ensuremath{-}1}$ from a multiconfiguration Dirac-Fock calculation by Marques et al. [Phys. Rev. A 47, 929 (1993)]. In this work, we use a large-scale relativistic configuration-interaction method to calculate these hyperfine-induced rates for ions with $Z=6--92$. Coherent hyperfine-quenching effects between the $2s2pphantom{rule{0.3em}{0ex}}^{1,3}P_{1}$ states are included in a perturbative as well as a radiation damping approach. Contrary to the claims of Marques et al., contributions from the $^{1}P_{1}$ state are substantial and lead to a hyperfine-induced rate of $0.67phantom{rule{0.3em}{0ex}}{mathrm{s}}^{ensuremath{-}1}$, in better agreement with, though larger than, the measured value." @default.
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- W2485093934 date "2008-05-23" @default.
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- W2485093934 title "Hyperfine quenching of the<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mn>2</mml:mn><mml:mi>s</mml:mi><mml:mn>2</mml:mn><mml:mi>p</mml:mi><mml:mspace width=0.3em /><mml:mmultiscripts><mml:mi>P</mml:mi><mml:mn>0</mml:mn><mml:none /><mml:mprescripts /><mml:none /><mml:mn>3</mml:mn></mml:mmultiscripts></mml:mrow></mml:math>state of berylliumlike ions" @default.
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- W2485093934 doi "https://doi.org/10.1103/physreva.77.052504" @default.
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