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Título : The N=Z nucleus Sr-76: Gamow-Teller strength and nuclear deformation
Autor : Dessagne, Ph.; García Borge, María José ; Giovinazzo, J.; Huck, A.; Jokinen, A.; Knipper, A.; Longour, C.; Marguier, G.; Ramdhane, M.; Rauch, V.; Tengblad, Olof ; Walter, G.; Miehé, Ch.
Palabras clave : [PACS] Spin, parity, and isobaric spin
[PACS] γ transitions and level energies
[PACS] Relation with nuclear matrix elements and nuclear structure
[PACS] Properties of specific nuclei listed by mass ranges: 59 ≤ A ≤ 89
Fecha de publicación : jun-2004
Editor: Società Italiana di Fisica
Springer
Citación : The European Physical Journal A: Hadrons and Nuclei 20(3): 405–411 (2004)
Resumen: Challenged by recent theoretical work, a, study of the β(+)-EC decay of the N = Z even-even nucleus Sr-76 has been undertaken in order to assign the parent ground-state deformation. lit this study 13 levels with J(π) = 1(+) have been located in Rb-76. The β-delayed proton emission has been observed for the first time in an N = Z even-even nucleus. The betap branching ratio has been determined to be (3.4 ± 0.8)x10(-5). The Sr-76 half-life has been remeasured and a more precise value of 7.89 ± 0.07 s has been obtained. On the basis of the comparison of measured Gamow-Teller strength with calculated strength distributions for both oblate and prolate deformation, it is concluded that the Sr-76 has strong prolate deformation in the ground state.
Descripción : 7 pages, 4 tables, 6 figures.--PACS nrs.: 21.10.Hw; 23.20.Lv; 23.40.Hc; 27.50.+e.
Versión del editor: http://www.springerlink.com/content/j98rcb5jy4cefkbd/
URI : http://hdl.handle.net/10261/4949
DOI: 10.1140/epja/i2003-10171-6
ISSN: 1434-6001 (Print)
1434-601X (Online)
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