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Mass measurements of the exotic nuclides 11Li and 11,12Be performed with the Mistral spectrometer

✍ Scribed by C. Gaulard; C. Bachelet; G. Audi; C. Guénaut; D. Lunney; M. de Saint Simon; M. Sewtz; C. Thibault

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
465 KB
Volume
826
Category
Article
ISSN
0375-9474

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✦ Synopsis

The mass of the halo nuclide 11 Li has been measured with unprecedented precision with the MISTRAL mass spectrometer at CERN's ISOLDE facility. Its resulting two-neutron separation energy, S 2n = 378 ± 5 keV, is 25% higher than the previously accepted value and about an order of magnitude more precise than any of the previous measurements. We also report measurement of the masses of 11 Be and 12 Be. The detailed analysis of these results and their evaluation are presented, along with a discussion concerning mass models.

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