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Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/7559
Title: Large asymmetry in the strongest β-transition for A=9
Authors: Prezado, Yolanda; Bergmann, U. C.; García Borge, María José; Cederkäll, J.; Diget, C. Aa.; Fraile, Luis M.; Fynbo, H. O. U.; Jeppesen, H.; Jonson, B.; Meister, M.; Nilsson, T.; Nyman, G.; Riisager, K.; Tengblad, Olof; Weissmann, L.; Wilhelmsen Rolander, K.
Keywords: Li-9(β-[from UC(p, X)])
Measured β-delayed Eα
Be-9 deduced β-branching strengths
A=9 β-decay asymmetry
[PACS] Relation with nuclear matrix elements and nuclear structure
[PACS] Spin, parity, and isobaric spin
[PACS] Properties of specific nuclei listed by mass ranges: 6 ≤ A ≤ 19
Issue Date: 24-Oct-2003
Publisher: Elsevier
Citation: Physics Letters B 576(1-2): 55–61 (2003)
Abstract: A new measurement of the β-decay of Li-9 has clarified the feeding to the highest accessible states in Be-9. It is found that the β-decay mainly populates the 11.8 MeV state, whose spin is determined as 5/2(-). The extracted B-GT value of 5.3(0.9) is a factor 4.4(1.0) larger than that of the mirror transition from C-9. A theoretical explanation of such a pronounced β-decay asymmetry is presently lacking.
Description: 7 pages, 1 table, 4 figures.-- PACS nrs.: 23.40.Hc; 21.10.Hw; 27.20.+n.-- Printed version published Dec 4, 2003.
Publisher version (URL): http://dx.doi.org/10.1016/j.physletb.2003.09.073
URI: http://hdl.handle.net/10261/7559
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2003.09.073
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