Physics – Quantum Physics
Scientific paper
1999-06-29
Phys.Rev.Lett. 84 (2000) 851-854
Physics
Quantum Physics
10 LaTex pages
Scientific paper
10.1103/PhysRevLett.84.851
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.
Labzowsky L. N.
Liesen Dieter
Nefiodov A. V.
Plunien Guenter
Soff Gerhard
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