Publication: Nuclear Charge Radii of 7,9,10Be and the one-neutron halo nucleus 11Be

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Title Nuclear Charge Radii of 7,9,10Be and the one-neutron halo nucleus 11Be
Authors/Editors* W. Nortershauser, D. Tiedemann, M. Zakova, Z. Andjelkovic, K. Blaum,M. L. Bissell, R. Cazan, G.W.F. Drake, Ch. Geppert, M. Kowalska, J. Kramer, A. Krieger, R. Neugart, R. Sanchez, F. Schmidt-Kaler, Z.-C. Yan, D. T. Yordanov, and C. Zimmermann
Where published* Phys. Rev. Lett.
How published* Journal
Year* 2008
Pages in press
The nuclear charge radii of 7,9,10,11Be have been determined by high-precision laser spectroscopy. On-line easurements were performed at ISOLDE with collinear laser spectroscopy in the 2s1/2 → 2p1/2 transition of Be+. Simultaneous measurements in collinear and anti-collinear direction combined with absolute frequency determination using a frequency comb yielded a transition frequency for 9Be of 957 199 552.7(8) MHz and accuracy in the isotope shift measurements of better than 1 MHz. Combined with accurate calculations of the mass-dependent isotope shifts the nuclear charge radii along the isotopic chain were extracted. 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 1.3998(15) μN and that of 11Be was confirmed with an accuracy similar to previous β-NMR measurements.
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