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The hyperfine structure of highly charged $^{238}_{92}$U ions with rotationally excited nuclei

L. N. Labzowsky·A. V. Nefiodov·G. Plunien·G. Soff·D. Liesen
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Abstract

The hyperfine structure (hfs) of electron levels of $^{238}_{92}$U ions with the nucleus excited in the low-lying rotational $2^+$ state with an energy $E_{2^+} = 44.91$ keV is investigated. In hydrogenlike uranium, the hfs splitting for the $1s_{1/2}$-ground state of the electron constitutes 1.8 eV. The hyperfine-quenched (hfq) lifetime of the $1s2p ^3P_0$ state has been calculated for heliumlike $^{238}_{92}$U and was found to be two orders of magnitude smaller than for the ion with the nucleus in the ground state. The possibility of a precise determination of the nuclear $g_r$ factor for the rotational $2^+$ state by measurements of the hfq lifetime is discussed.

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L. N. Labzowsky, A. V. Nefiodov, G. Plunien, G. Soff, D. Liesen. 1999-06-29. The hyperfine structure of highly charged $^{238}_{92}$U ions with rotationally excited nuclei. https://doi.org/10.1103/physrevlett.84.851

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