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Closed Access item The N=Z nucleus Sr-76: Gamow-Teller strength and nuclear deformation

Authors: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.
Keywords:[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
Issue Date:Jun-2004
Publisher:Società Italiana di Fisica
Citation:The European Physical Journal A: Hadrons and Nuclei 20(3): 405–411 (2004)
Abstract: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.
Description:7 pages, 4 tables, 6 figures.--PACS nrs.: 21.10.Hw; 23.20.Lv; 23.40.Hc; 27.50.+e.
Publisher version (URL):http://www.springerlink.com/content/j98rcb5jy4cefkbd/
ISSN:1434-6001 (Print)
1434-601X (Online)
Appears in Collections:(CFMAC-IEM) Artículos

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