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Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/13334
Title: The Halo of 14Be
Authors: Labiche, M.; Orr, N. A.; Marqués, F. M.; Angélique, J. C.; Axelsson, L.; Benoit, B.; Bergmann, U. C.; García Borge, María José; Catford, W. N.; Chappell, S. P. G.; Clarke, N. M.; Costa, G.; Curtis, N.; D’Arrigo, A.; de Góes Brennand, E.; Dorvaux, O.; Fazio, G.; Freer, M.; Fulton, B. R.; Giardina, G.; Grévy, S.; Guillemaud-Mueller, D.; Hanappe, F.; Heusch, B.; Jones, K.L.; Jonson, B.; Le Brun, C.; Leenhardt, S.; Lewitowicz, M.; López, M. J.; Markenroth, K.; Mueller, A. C.; Nilsson, T.; Ninane, A.; Nyman, G.; de Oliveira, F.; Piqueras, I.; Riisager, K.; Saint-Laurent, M. G.; Sarazin, F.; Singer, S. M.; Sorlin, O.; Stuttgé, L.
Keywords: [PACS] Properties of specific nuclei listed by mass ranges: 6 ≤ A ≤ 19
[PACS] Interaction and reaction cross sections
[PACS] Breakup and momentum distributions
[PACS] Other resonances
Issue Date: 7-Jun-2000
Citation: arXiv:nucl-ex/0006003v1
Abstract: The two-neutron halo nucleus 14Be has been investigated in a kinematically complete measurement of the fragments (12Be and neutrons) produced in dissociation at 35 MeV/nucleon on C and Pb targets. Two-neutron removal cross-sections, neutron angular distributions and invariant mass spectra characteristic of a halo were observed and the electromagnetic (EMD) contributions deduced. Comparison with three-body model predictions indicate that the halo wavefunction contains a large 2s1/2^2 admixture. The EMD invariant mass spectrum exhibited a relatively narrow structure near threshold (Edecay=1.8+/-0.1 MeV, Gamma = 0.8+/-0.4 MeV) consistent with a soft-dipole excitation.
Description: 17 pages, 1 table, 3 figures.--PACS nrs.: 27.20.+n6, 25.60.Dz, 25.60.Ge, 24.30.Gd.
Publisher version (URL): http://arxiv.org/abs/nucl-ex/0006003
URI: http://hdl.handle.net/10261/13334
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