Isotope Shift in the CdI Intercombination Resonance Line   3261

Kelly, F. M.; Tomchuk, E.

doi:10.1088/0370-1328/74/6/304

Cited by 20 publications

(10 citation statements)

References 6 publications

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“…The most direct way to evaluate these factors is to draw a King plot of shifts between stable isotopes in )~326.1 nm against those in ,~226.5 nm. Unfortunately, the results available for the stable isotopes in 2326.1 nm [19] are not accurate enough to make this procedure worthwhile. We are therefore currently carrying out new measurements on this line; we shall report the results in a later publication.…”

Section: Discussionmentioning

confidence: 99%

Analysis of optical isotope shifts in cadmium

Bauche

Hühnermann

Stacey³

et al. 1985

Z Physik A

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An interpretation is given of published measurements of optical isotope shifts in cadmium. This requires the evaluation of two electronic factors for each transition; these are found for the alkali-like transitions 22 226.5, 806.7 and 853.3 nm of Cd II using data from hyperfine structure and evidence from atomic calculations. The King relations then allow the electronic factors for 2 441.6 nm to be derived. Finally, the precise measurements of isotope shifts in this transition are analysed to investigate how the nuclear charge distribution changes over the range of stable isotopes.

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Section: Discussionmentioning

confidence: 99%

Analysis of optical isotope shifts in cadmium

Bauche

Hühnermann

Stacey³

et al. 1985

Z Physik A

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“…These experimental isotope shifts for the ICL transition are presented in Table XI. a Consistent with the original reference of [52].…”

Section: Centroid Frequenciesmentioning

confidence: 64%

MCDHF-CI calculations for Hg and Cd with estimates for unknown clock transition frequencies

Schelfhout,

McFerran

2021

Preprint

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By use of the grasp2018 package we perform Multiconfiguration Dirac-Hartree-Fock (MCDHF) calculations with configuration interaction (CI) for the 1 S0 and 3 P o 0,1 levels in neutral cadmium and mercury. By supplying the resultant atomic state functions to the ris4 program, we evaluate the mass and field shift parameters for the 1 S0 − 3 P o 0 (clock) and 1 S0 − 3 P o 1 (intercombination) lines. We make revised estimates of the nuclear charge parameters λ A,A and differences in mean-square charge radii δ r 2 A,A for both elements and point out a discrepancy with tabulated data for Cd. In constructing a King plot with the Hg lines we examine the second-order hyperfine interaction for the 3 P o 0,1 levels. Isotope shifts for the clock transition have been estimated from which we predict the unknown clock line frequencies in the bosonic Hg isotopes and all the naturally occurring isotopes of Cd.

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“…They are more accurate than our measurement of the same line with a beam, and comprise an order of magnitude of improvement compared with the weighted average of previous measurements. A disagreement of four combined errors is found for the (114 116) pair, previously measured with interferometry of fluorescence [58,62]. This disagreement manifests as different slopes of the KP portrayed in figure 3(b).…”

Section: Measurements Of 326 480 and 361 Nm Iss With Magneto-optic Trapsmentioning

confidence: 81%

Isotope shifts in cadmium as a sensitive probe for physics beyond the standard model

et al. 2022

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Isotope shifts (ISs) of atomic energy levels are sensitive probes of nuclear structure and new physics beyond the Standard Model. We present an analysis of the ISs of the cadmium atom (Cd I) and singly charged cadmium ion (Cd II). ISs of the 229 nm, 326 nm, 361 nm and 480 nm lines of Cd I are measured with a variety of techniques; buffer-gas-cooled beam spectroscopy, capturing atoms in a magneto-optic-trap, and optical pumping. IS constants for the D$_1$ and D$_2$ lines of Cd II are calculated with high accuracy by employing analytical response relativistic coupled-cluster theory in the singles, doubles and triples approximations. Combining the calculations for Cd II with experiments, we infer IS constants for all low-lying transitions in Cd I. We benchmark existing calculations via different many-body methods against these constants. Our calculations for Cd II enable nuclear charge radii of Cd isotopes to be extracted with unprecedented accuracy. The combination of our precise calculations and measurements shows that King Plots for Cd~I can improve the state-of-the-art sensitivity to a new heavy boson by up to two orders of magnitude.

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Isotope Shift in the CdI Intercombination Resonance Line 3261

Cited by 20 publications

References 6 publications

Analysis of optical isotope shifts in cadmium

Analysis of optical isotope shifts in cadmium

MCDHF-CI calculations for Hg and Cd with estimates for unknown clock transition frequencies

Isotope shifts in cadmium as a sensitive probe for physics beyond the standard model

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