Measurement of the lamb shift in lithiumlike uranium (U89+)

Schweppe, John E.; Belkacem, A.; Blumenfeld, Lev; Claytor, N.; Feinberg, B.; Gould, Harvey; Kostroun, V. E.; Lévy, Laurent; Misawa, S.; Mowat, J. R.; Prior, M. H.

doi:10.1063/1.40987

Cited by 13 publications

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“…The total value of the transition energy amounts to 280.64(11)(21) eV, which agrees well with the experimental result of 280.59(10) eV [34]. In the theoretical prediction, the first quoted error arises from the uncertainty due to the finite nuclear size effect and due to higher-order electron correlations (see discussion in Ref.…”

Section: Resultssupporting

confidence: 79%

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Two-loop self-energy correction in H-like ions

2001

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A part of the two-loop self-energy correction, the so-called P term, is evaluated numerically for the 1s state to all orders in Zα. Our calculation, combined with the previous investigation [S. Mallampalli and J. Sapirstein, Phys.Rev. A 57, 1548 (1998)], yields the total answer for the two-loop self-energy correction in H-like uranium and bismuth. As a result, the major uncertainty is eliminated from the theoretical prediction for the Lamb shift in these systems. The total value of the ground-state Lamb shift in H-like uranium is found to be 463.93(50) eV.

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Section: Resultssupporting

confidence: 79%

“…For the 2p 1/2 -2s transition in Li-like uranium, the total result amounts to 280.64 (24) eV, which should be compared with the experimental value of 280.59(10) eV [34]. …”

Section: Discussionmentioning

confidence: 99%

Two-loop self-energy correction in H-like ions

2001

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“…As it has been shown in many papers (e.g. papers [1][2][3][4][5]7,11] and refs there), the models with the Fermi and Gauss charge distribution in a nucleus are most widespread and more correct in comparison with the model of homogeneous ball charge distribution. For example, let us mention that a difference in values of the spectra levels energies is about several cm -1 [4,5,7].…”

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confidence: 97%

“…It is provided by necessity of further developing the modern as atomic and as nuclear theories. From the other side, a great progress in experiments has been achieved [1][2][3][4]. In calculations of the heavy ions the well known multi-configuration (MC) Dirac-Fock (DF) approach is widely used [1].…”

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confidence: 99%

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Sensing the Hyperfine Structure and Nuclear Quadrupole Moment for Radium

Gurnitskaya

Khetselius

2014

SEMST

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It has been carried out sensing and estimating the hyperfine structure parameters and nuclear quadrupole moment of the radium on the basis of gauge-invariant QED perturbation theory with an account of correlation effects Key words: sensing and estimate, hyperfine structure, nuclear quadrupole moment, radium Âûïîëíåíî äåòåêòèðîâàíèå è îöåíêà ïàðàìåòðîâ ñâåðõòîíêîé ñòðóêòóðû è ÿäåðíîãî êâàäðóïîëüíîãî ìîìåíòà äëÿ ðàäèÿ íà îñíîâå êàëèáðîâî÷íî-èíâàðèàíòíîé ÊÝÄ òåîðèè âîçìóùåíèé ñ ó÷åòîì êîððåëÿöèîííûõ ýôôåêòîâ.Êëþ÷åâûå ñëîâà: äåòåêòèðîâàíèå è îöåíêà, ñâåðõòîíêàÿ ñòðóêòóðà, ÿäåðíûé êâàäðó-ïîëüíûé ìîìåíò, ðàäèé

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Precision spectroscopy at heavy ion ring accelerator SIS300

Backe

2007

Laser 2006

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Abstract.Unique spectroscopic possibilities open up if a laser beam interacts with relativistic lithium-like ions stored in the heavy ion ring accelerator SIS300 at the future Facility for Antiproton and Ion Research FAIR in Darmstadt, Germany. At a relativistic factor γ = 36 the 2 P 1/2 level can be excited from the 2 S 1/2 ground state for any element with frequency doubled dye-lasers in collinear geometry. Precise transition energy measurements can be performed if the fluorescence photons, boosted in forward direction into the X-ray region, are energetically analyzed with a single crystal monochromator. The hyperfine structure can be investigated at the 2 P 1/2 − 2 S 1/2 transition for all elements and at the 2 P 3/2 − 2 S 1/2 transition for elements with Z ≤ 50. Isotope shifts and nuclear moments can be measured with unprecedented precision, in principle even for only a few stored radioactive species with known nuclear spin. A superior relative line width in the order of 5 · 10 −7 may be feasible after laser cooling, and even polarized external beams may be prepared by optical pumping.

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Measurement of the lamb shift in lithiumlike uranium (U89+)

Cited by 13 publications

References 0 publications

Two-loop self-energy correction in H-like ions

Two-loop self-energy correction in H-like ions

Sensing the Hyperfine Structure and Nuclear Quadrupole Moment for Radium

Precision spectroscopy at heavy ion ring accelerator SIS300

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