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Título : Multiple particle break-up study of low excited states in Be-9: The ghost peak in the Be-8 excitation energy spectrum visited
Autor : Madurga, Miguel, García Borge, María José, Fynbo, H. O. U., Jonson, B., Nyman, G., Prezado, Yolanda, Riisager, K., Tengblad, Olof
Palabras clave : [PACS] β decay; double β decay; electron and muon capture
[PACS] Relation with nuclear matrix elements and nuclear structure
[PACS] Properties of specific nuclei listed by mass ranges: 6 ≤ A ≤ 19
Fecha de publicación : Nov-2007
Editor: Springer
Resumen: The aim of this work is to find out the origin of the anomalous resonance in Be-8 seen in the reactions through excited states in Be-9. We have populated the Be-9 excited states by beta-decay of Li-9. Energy and direction of the two alpha particles has been detected and the neutron spectra reconstructed. In our work we identified the "anomalous resonance" in Be-8 observed in several reaction studies as coming from the decay of the 2.43 and 2.78 MeV states in Be-9. This anomalous resonance appears when the two detected alpha particles are assumed to form a resonance in Be-8. We argued that the main decaying channels for these two levels in Be-9 do not involve Be-8.
Descripción : 2 pages, 2 figures.-- PACS nrs.: 23.40.-s; 23.40.Hc; 27.20.+n.
Versión del editor:
ISSN: 1951-6355 (Print)
1951-6401 (Online)
DOI: 10.1140/epjst/e2007-00287-3
Citación : The European Physical Journal - Special Topics 150(1): 137–138 (2007)
Appears in Collections:(CFMAC-IEM) Artículos

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