Isotope shift in the dielectronic recombination of three-electron ^{A}Nd^{57+}

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

doi:10.1103/physrevlett.100.073201

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arXiv · 0801.3798

Isotope shift in the dielectronic recombination of three-electron ^{A}Nd^{57+}

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Abstract

Isotope shifts in dielectronic recombination spectra were studied for Li-like ^{A}Nd^{57+} ions with A=142 and A=150. From the displacement of resonance positions energy shifts δE^{142,150}(2s-2p_1/2)= 40.2(3)(6) meV (stat)(sys)) and δE^{142,150}(2s-2p_3/2) = 42.3(12)(20) meV of 2s-2p_j transitions were deduced. An evaluation of these values within a full QED treatment yields a change in the mean-square charge radius of ^{142,150}δ = -1.36(1)(3) fm^2. The approach is conceptually new and combines the advantage of a simple atomic structure with high sensitivity to nuclear size.

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C. Brandau, C. Kozhuharov, Z. Harman, A. Müller, S. Schippers, Y. S. Kozhedub, D. Bernhardt, S. Böhm, J. Jacobi, E. W. Schmidt, P. H. Mokler, F. Bosch, H. -J. Kluge, Th. Stöhlker, K. Beckert, P. Beller, F. Nolden, M. Steck, A. Gumberidze, R. Reuschl, U. Spillmann, F. J. Currell, I. I. Tupitsyn, V. M. Shabaev, U. D. Jentschura, C. H. Keitel, A. Wolf, Z. Stachura. 2008-01-24. Isotope shift in the dielectronic recombination of three-electron ^{A}Nd^{57+}. https://doi.org/10.1103/physrevlett.100.073201

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