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Título: | The Halo of 14Be |
Autor: | Labiche, M.; Orr, N. A.; Marqués, F. M.; Angélique, J. C.; Axelsson, L.; Benoit, B.; Bergmann, U. C.; García Borge, María José ![]() |
Palabras clave: | [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 |
Fecha de publicación: | 7-jun-2000 |
Citación: | arXiv:nucl-ex/0006003v1 |
Resumen: | 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. |
Descripción: | 17 pages, 1 table, 3 figures.--PACS nrs.: 27.20.+n6, 25.60.Dz, 25.60.Ge, 24.30.Gd. |
Versión del editor: | http://arxiv.org/abs/nucl-ex/0006003 |
URI: | http://hdl.handle.net/10261/13334 |
Aparece en las colecciones: | (CFMAC-IEM) Artículos |
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