Breit interaction in dielectronic recombination of hydrogenlike uranium

D. Bernhardt, C. Brandau, Z. Harman, C. Kozhuharov, A. Muller, W. Scheid, S. Schippers, E.W. Schmidt, D. Yu, A.N. Artemyev, I.I. Tupitsyn, S. Bohm, F. Bosch, Frederick Currell, B. Franzke, A. Gumberidze, J. Jacobi, P.H. Mokler, F. Nolden, U. SpillmanZ. Stachura, M. Steck, T. Stohlker

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

Absolute rate coefficients for dielectronic recombination (DR) of H-like U91+ ions have been measured. The electron-ion merged-beam technique at a heavy-ion storage ring was employed using a stochastically cooled ion beam. Thereby, the previously accessible electron-ion collision energies could be greatly extended to the range 63-90 keV. High-resolution DR spectra were measured covering all KLL and KLM resonances. For the resonance strengths, excellent agreement between relativistic theory and experiment is found only if the Breit contribution to the electron-electron interaction is included in the calculations. For the KL1/2L1/2 and KL1/2M1/2 groups the Breit contribution amounts to 44% of their total resonance strengths.
Original languageEnglish
Article number020701
JournalPhysical Review A
Volume83
Issue number2
DOIs
Publication statusPublished - 18 Feb 2011

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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