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Measurement of the ground-state lambshift of hydrogenlike uranium at the electron cooler of the ESR

  • Atoms
  • Published:
Zeitschrift für Physik D Atoms, Molecules and Clusters

Abstract

X-rays are emitted with the radiative recombination of free electrons in an electron cooler of a heavyion storage ring. Due to a small width of the X-ray lines, an observation angle close to 0° and an accurate determination of the ion velocity, the ground-state Lambshift of hydrogenlike uranium (470 ± 16) eV could be measured to an accuracy of 3.4%. A re-evaluation of a measurement of the 1s 1/2 Lambshift in hydrogenlike gold gave a new value of (202.3 ± 7.9) eV as compared to the former value of (212 ± 15) eV. The results are in excellent agreement with QED calculations and are more precise than any other measurements previously reported for a high-Z, hydrogenlike ion.

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Authors and Affiliations

  1. Gesellschaft für Schwerionenforschung (GSI), Planckstrasse 1, D-64291, Darmstadt, Germany

    H. F. Beyer, G. Menzel, D. Liesen, A. Gallus, F. Bosch, Th. Stöhlker, O. Klepper, R. Moshammer, F. Nolden, H. Eickhoff, B. Franzke & M. Steck

  2. National Institute of Standards and Technology, 20899, Gaithersburg, MD, USA

    R. Deslattes

  3. Laboratoire de Physique Atomique et Nucléaire, Institut de Radium, Université Pierre et Marie Curie, T12, Boîte 93, F-75252, Paris Cedex 05, France

    P. Indelicato

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  1. H. F. Beyer
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  2. G. Menzel
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  3. D. Liesen
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  4. A. Gallus
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  5. F. Bosch
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  6. R. Deslattes
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  7. P. Indelicato
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  8. Th. Stöhlker
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  9. O. Klepper
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  10. R. Moshammer
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  11. F. Nolden
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  12. H. Eickhoff
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  13. B. Franzke
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  14. M. Steck
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Beyer, H.F., Menzel, G., Liesen, D. et al. Measurement of the ground-state lambshift of hydrogenlike uranium at the electron cooler of the ESR. Z Phys D - Atoms, Molecules and Clusters 35, 169–175 (1995). https://doi.org/10.1007/BF01437066

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  • DOI: https://doi.org/10.1007/BF01437066

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