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Closed Access item Multiple particle break-up study of low excited states in Be-9: The ghost peak in the Be-8 excitation energy spectrum visited

Authors:Madurga, Miguel
García Borge, María José
Fynbo, H. O. U.
Jonson, B.
Nyman, G.
Prezado, Yolanda
Riisager, K.
Tengblad, Olof
Keywords:[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
Issue Date:Nov-2007
Citation:The European Physical Journal - Special Topics 150(1): 137–138 (2007)
Abstract: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.
Description:2 pages, 2 figures.-- PACS nrs.: 23.40.-s; 23.40.Hc; 27.20.+n.
Publisher version (URL):http://dx.doi.org/10.1140/epjst/e2007-00287-3
ISSN:1951-6355 (Print)
1951-6401 (Online)
Appears in Collections:(CFMAC-IEM) Artículos

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