Bachelet C, Audi G, Gaulard C, Guénaut C, Herfurth F, Lunney D, de Saint Simon M, Thibault C. New binding energy for the two-neutron halo of 11Li.
Phys Rev Lett 2008;
100:182501. [PMID:
18518366 DOI:
10.1103/physrevlett.100.182501]
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Abstract
The extended radius of a halo nuclide is very sensitive to the minute binding energy of its valence nucleons. The binding energy of 11Li has been measured with high precision by using the radio-frequency spectrometer MISTRAL at CERN's ISOLDE facility. The new two-neutron separation energy of 378+/-5 keV is 25% higher than the previously accepted value with an uncertainty 5 times smaller.
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