Benchmarking high-field few-electron correlation and QED contributions in Hg75+ 
to Hg78+ ions: I. Experiment

González-Martínez, A. J.; Crespo López-Urrutia, J. R.; Braun, J.; Brenner, G.; Bruhns, H.; Lapierre, A.; Mironov, V.; Soria Orts, R.; Tawara, H.; Trinczek, M.; Ullrich, J.; Artemyev, A. N.; Harman, Z.; Jentschura, U. D.; Keitel, C. H.; Scofield, J. H.; Tupitsyn, I. I.

doi:10.1103/PhysRevA.73.052710

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Benchmarking high-field few-electron correlation and QED contributions in Hg⁷⁵⁺ to Hg⁷⁸⁺ ions: I. Experiment

MPS-Authors

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González-Martínez, A. J.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Crespo López-Urrutia, J. R.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Braun, J.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Brenner, G.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Bruhns, H.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Lapierre, A.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Mironov, V.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Soria Orts, R.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Tawara, H.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Trinczek, M.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Ullrich, J.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Artemyev, A. N.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Harman, Z.
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Jentschura, U. D.
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Keitel, C. H.
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Tupitsyn, I. I.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Citation

González-Martínez, A. J., Crespo López-Urrutia, J. R., Braun, J., Brenner, G., Bruhns, H., Lapierre, A., et al. (2006). Benchmarking high-field few-electron correlation and QED contributions in Hg⁷⁵⁺ to Hg⁷⁸⁺ ions: I. Experiment. Physical Review A, 73(5): 052710, pp. 1-10. doi:10.1103/PhysRevA.73.052710.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-7FFF-9

Abstract

The photorecombination of highly charged few-electron mercury ions Hg75+ to Hg78+ has been explored with the Heidelberg electron beam ion trap. By monitoring the emitted x rays (65–76 keV) and scanning the electron beam energy (45–54 keV) over the KLL dielectronic recombination (DR) region, the energies of state-selected DR resonances were determined to within ±4 eV (relative) and ±14 eV (absolute). At this level of experimental accuracy, it becomes possible to make a detailed comparison to various theoretical approaches and methods, all of which include quantum electrodynamic (QED) effects and finite nuclear size contributions (for a 1s electron, these effects can be as large as 160 and 50 eV, respectively). In He-like Hg78+, a good agreement between the experimental results and the calculations has been found. However, for the capture into Li-, Be-, and B-like ions, significant discrepancies have been observed for specific levels. The discrepancies suggest the need for further theoretical and experimental studies with other heavy ions along these isoelectronic sequences.