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The electronic field shift factor of the 4s2S1/2−4p2PJ transitions in CaII

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Abstract

The isotope shifts (IS) of the resonance lines 4s2S1/2−4p2PJin CaII (seven isotopes) have been measured by fast ion beam collinear laser spectroscopy (FIBCLS) with non-optical detection of the resonant laser-ion interaction. The electronic field shift factorF was derived from the experimental IS via a King plot procedure using the mean square nuclear charge radii from muon spectroscopy andelectron scattering. TheJ-independent resultF=−283(6) Mhz/fm2 was obtained. TheF-value resulting from extensive many body perturbation theory (MBPT) calculations, recently performed by Märtensson-Pendrill et al., is in excellent agreement with the experimental value, confirming the reliability of the MBPT procedure.

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Silverans, R.E., Vermeeren, L., Klein, A. et al. The electronic field shift factor of the 4s2S1/2−4p2PJ transitions in CaII. Hyperfine Interact 78, 247–250 (1993). https://doi.org/10.1007/BF00568146

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