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

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

2005-09-30

arxiv.org/abs/physics/0509265v2

Physics

Atomic Physics

5 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.96.033002

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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