Isotope Shift in the Dielectronic Recombination of Three-Electron Nd57+A

C. Brandau et al.
Phys. Rev. Lett. 100, 073201 – Published 19 February 2008

Abstract

Isotope shifts in dielectronic recombination spectra were studied for Li-like Nd57+A ions with A=142 and A=150. From the displacement of resonance positions energy shifts δE142150(2s2p1/2)=40.2(3)(6)meV [(stat)(sys)] and δE142150(2s2p3/2)=42.3(12)(20)meV of 2s2pj transitions were deduced. An evaluation of these values within a full QED treatment yields a change in the mean-square charge radius of δ142150r2=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.

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  • Received 28 September 2007

DOI:https://doi.org/10.1103/PhysRevLett.100.073201

©2008 American Physical Society

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Vol. 100, Iss. 7 — 22 February 2008

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