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Nuclear Charge Radius of Li-9, Li-11: Halo Neutron: the influence of Halo Neutrons

R. Sánchez·W. Nörtershäuser·G. Ewald·D. Albers·J. Behr·P. Bricault·B. A. Bushaw·A. Dax·J. Dilling·M. Dombsky·G. W. F. Drake·S. Götte·R. Kirchner·H. -J. Kluge·Th. Kühl·J. Lassen·C. D. P. Levy·M. Pearson·E. Prime·V. Ryjkov·A. Wojtaszek·Z. -C. Yan·C. Zimmermann
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Abstract

The nuclear charge radius of Li-11 has been determined for the first time by high precision laser spectroscopy. On-line measurements at TRIUMF-ISAC yielded a Li-7 - Li-11 isotope shift (IS) of 25101.23(13) MHz for the Doppler-free 2s - 3s transition. IS precision for all other bound Li isotopes was also improved. Differences from calculated mass-based IS yield values for change in charge radius along the isotope chain. The charge radius decreases monotonically from Li-6 to Li-9, and then increases from 2.217(35) fm to 2.467(37) fm for Li-11. This is compared to various models, and it is found that a combination of halo neutron correlation and intrinsic core excitation best reproduces the experimental results.

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R. Sánchez, W. Nörtershäuser, G. Ewald, D. Albers, J. Behr, P. Bricault, B. A. Bushaw, A. Dax, J. Dilling, M. Dombsky, G. W. F. Drake, S. Götte, R. Kirchner, H. -J. Kluge, Th. Kühl, J. Lassen, C. D. P. Levy, M. Pearson, E. Prime, V. Ryjkov, A. Wojtaszek, Z. -C. Yan, C. Zimmermann. 2005-11-16. Nuclear Charge Radius of Li-9, Li-11: Halo Neutron: the influence of Halo Neutrons. https://doi.org/10.1103/physrevlett.96.033002

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