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Registro de acceso abierto Structure of Ac-231: Measurements of level half-lives

Autor :Boutami, R.
García Borge, María José
Mach, H.
Fraile, Luis M.
Gulda, K.
Aas, A. J.
García Raffi, Luis M.
Hagebø, E.
Kurcewicz, W.
Løvhøiden, G.
Martínez, T.
Rubio, Berta
Taín, José Luis
Tengblad, Olof
Palabras clave :Neutron-rich nuclei, RA-231, [PACS] Lifetimes, [PACS] Gamma transitions and level energies, [PACS] Properties of specific nuclei listed by mass ranges: 220 ≤ A, [PACS] X- and gamma-ray spectroscopy
Fecha de publicación :nov-2007
Editor:EDP Sciences
Società Italiana di Fisica
Springer
Citación :European Physical Journal-Special Topics 150: 87–88 (2007)
Resumen:There is lack of knowledge of the structure of the Ac-231 nucleus located in the upper border of the island of octupole deformation centered around A = 225. We have populated the excited states in Ac-231 by beta-decay from the parent Ra-231 produced at ISOLDE, CERN. The low-energy structure of Ac-231 has been investigated by means of γ, conversion electrons, γ-γ and γ-e(-) spectroscopy. We report here in the precise determination in Ac-231 of the half-life of the most intensively populated states by the Advanced Time Delayed ββγ(t) technique.
Descripción :2 pages, 2 figures.-- PACS nrs.: 21.10.Tg; 23.20.Lv; 27.90.+b; 29.30.Kv.
Versión del editor:http://dx.doi.org/10.1140/epjst/e2007-00273-9
URI :http://hdl.handle.net/10261/8860
ISSN:1951-6355 (Print)
1951-6401 (Online)
DOI:10.1140/epjst/e2007-00273-9
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