Isotope Shift in the Dielectronic Recombination of Three-Electron ANd57+

C. Brandau, C. Kozhuharov, Z. Harman, A. Muller, S. Schippers, Y. S. Kozhedub, D. Bernhardt, S. Boehm, J. Jacobi, E. W. Schmidt, P. H. Mokler, F. Bosch, H. J. Kluge, Th. Stohlker, K. Beckert, P. Beller, F. Nolden, M. Steck, A. Gumberidze, R. ReuschlU. Spillmann, F. J. Currell, I. I. Tupitsyn, V. M. Shabaev, U. D. Jentschura, C. H. Keitel, A. Wolf, Z. Stachura

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Isotope shifts in dielectronic recombination spectra were studied for Li-like ANd57+ ions with A=142 and A=150. From the displacement of resonance positions energy shifts dE142?150(2s-2p1/2)=40.2(3)(6)??meV [(stat)(sys)] and dE142?150(2s-2p3/2)=42.3(12)(20)??meV of 2s-2pjtransitions were deduced. An evaluation of these values within a full QED treatment yields a change in the mean-square charge radius of 142?150d?r2?=-1.36(1)(3)??fm2. The approach is conceptually new and combines the advantage of a simple atomic structure with high sensitivity to nuclear size.

Original languageEnglish
Article number073201
Number of pages4
JournalPhysical Review Letters
Issue number7
Early online date19 Feb 2008
Publication statusPublished - 22 Feb 2008

ASJC Scopus subject areas

  • General Physics and Astronomy


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