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 δE142 150(2s-2p1/2) = 40.2(3)(6) meV [(stat)(sys)] and δE142 150(2s - 2p3/2) = 42.3(12)(20)meV of 2s - 2pj transitions were deduced. An evaluation of these values within a full QED treatment yields a change in the mean-square charge radius of 142 150δ⟨ 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.
"Isotope Shift in the Dielectronic Recombination of Three-electron ANd57+," Physical Review Letters, vol. 100, no. 7, pp. 073201-1-073201-4, American Physical Society (APS), Feb 2008.
The definitive version is available at https://doi.org/10.1103/PhysRevLett.100.073201
Keywords and Phrases
Crystal Atomic Structure; Isotopes; Phase Shift; Resonance; Dielectronic Recombination; Isotope Shift; Nuclear Size; Electrons
International Standard Serial Number (ISSN)
Article - Journal
© 2008 American Physical Society (APS), All rights reserved.