Publication: Nuclear Charge Radii of Be-7,Be-9,Be-10 and the One-Neutron Halo Nucleus Be-11

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Title Nuclear Charge Radii of Be-7,Be-9,Be-10 and the One-Neutron Halo Nucleus Be-11
Authors/Editors* W. Nörtershäuser, D. Tiedemann, M. Žáková, Z. Andjelkovic, K. Blaum, M. L. Bissell, R. Cazan, G. W. F. Drake, Ch. Geppert1, M. Kowalska, J. Krämer, A. Krieger, R. Neugart, R. Sánchez, F. Schmidt-Kaler, Z.-C. Yan, D. T. Yordanov, and C. Zimmermann
Where published* Physical Review Letters
How published* Journal
Year* 2009
Volume 102
Number 6
Pages 062503 (4 pages)
Publisher American Physical Society
Nuclear charge radii of 7,9,10,11Be have been determined by high-precision laser spectroscopy. On-line measurements were performed with collinear laser spectroscopy in the 2s1/2→2p1/2 transition on a beam of Be+ ions. Collinear and anticollinear laser beams were used simultaneously, and the absolute frequency determination using a frequency comb yielded an accuracy in the isotope-shift measurements of about 1 MHz. Combining this with accurate calculations of the mass-dependent isotope shifts yields nuclear charge radii. The charge radius decreases from 7Be to 10Be and then increases for the halo nucleus 11Be. When comparing our results with predictions of ab initio nuclear-structure calculations we find good agreement. Additionally, the nuclear magnetic moment of 7Be was determined to be -1.3995(5)μN and that of 11Be was confirmed with an accuracy similar to previous β-NMR measurements.
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