Journal
NUCLEAR PHYSICS A
Volume 826, Issue 1-2, Pages 1-23Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nuclphysa.2009.04.011
Keywords
ATOMIC MASSES Li-11; measured mass and two-neutron separation energy. Be-11,Be-12; measured mass. MISTRAL spectrometer at lSOLDE.; Comparison with various models and other data
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Funding
- IN2P3
- EU RTD program Access to Research Infrastructures [HPRI-CT-1998-00018]
- research network NiPNET [HPRI-CT-2001-50034]
- ISOLDE Collaboration
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The mass of the halo nuclide Li-11 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 Be-11 and Be-12. The detailed analysis of these results and their evaluation are presented, along with a discussion concerning mass models. (C) 2009 Elsevier B.V. All rights reserved.
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