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Systematic investigation of the drip-line nuclei Li-11 and Be-14 and their unbound subsystems Li-10 and Be-13

AutorSimon, H.; Meister, M.; Aumann, T.; García Borge, María José ; Chulkov, L. V.; Pramanik, U. Datta; Elze, Th. W.; Emling, H.; Forssen, C.; Geissel, H.; Hellstroem, M.; Jonson, B.; Kratz, Jx.; Kulessa, R.; Nilsson, T.; Nyman, G.; Richter, Achim W.; Riisager, K.; Scheidenberger, C.; Schrieder, G.; Tengblad, Olof ; Zhukov, M. V.
Palabras claveReaction Cross-Sections
N=8 Shell Closure
Halo Nuclei
Fragmentation Reactions
Momentum Distributions
Cluster Model
Fecha de publicación13-may-2007
SerieNuclear Physics A 791(3-4): 267–302 (2007)
ResumenFragmentation reactions in a carbon target with beams of Li-11 and Be-14 at relativistic energies have been studied in a kinematically complete experiment at the ALADIN-LAND setup at GSI. Excited states in Li-11 and Be-14 were obtained from the data in the inelastic channel. The measured cross sections with the core nucleus in the final state show that in the Be-14 case core polarization plays an important role. In the one-neutron knockout channels the measured angular correlations between fragment and neutron are asymmetric, which demonstrates the presence of states with different parities in the Li-11 and Be-14 ground states. For Li-10 a low-lying virtual s-state, a p-state and evidence for a d-state could be extracted from the data, while the Be-12 + n system shows resonances with more complicated structure.
Descripción36 pages, 10 figures, 8 tables, 3 appendices.-- PACS nrs.: 27.20.+n; 24.70.+s.-- Printed version published Jul 15, 2007.
Versión del editorhttp://dx.doi.org/10.1016/j.nuclphysa.2007.04.021
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