Atomic Structure of Nd9+ for Highly Charged Ion Clocks

The energy levels arising from the electronic orbital 5p−4f crossing between the ground 5p24f and excited 5p4f2 configurations in the Nd9+ ion are investigated by using high-accuracy relativistic ab initio calculations. The accurate atomic data of the lifetime, gJ factor, electric quadrupole moment,...

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Veröffentlicht in:Atoms 2022-12, Vol.10 (4), p.123
Hauptverfasser: Yu, Yanmei, Pan, Duo, Chen, Shaolong, Arora, Bindiya, Guan, Hua, Gao, Kelin, Chen, Jingbiao
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Sprache:eng
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Zusammenfassung:The energy levels arising from the electronic orbital 5p−4f crossing between the ground 5p24f and excited 5p4f2 configurations in the Nd9+ ion are investigated by using high-accuracy relativistic ab initio calculations. The accurate atomic data of the lifetime, gJ factor, electric quadrupole moment, and hyperfine structure of the magnetic dipole are also presented. The long-lived states that are suitable for making narrow-linewidth (milli-Hz) clock lines are found. Dominant systematics caused by stray electromagnetic interactions in an experiment and the coefficients of the relativistic sensitivityto variation of the fine-structure constant α and of the Lorentz invariance violation are evaluated, thus validating that the Nd9+ ion can be a new candidate for high-resolution spectroscopy and precision fundamental studies for probing new physics beyond the Standard Model.
ISSN:2218-2004
2218-2004
DOI:10.3390/atoms10040123