Large asymmetry in the strongest β-transition for A=9

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Título :	Large asymmetry in the strongest β-transition for A=9
Autor :	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.
Palabras clave :	Li-9(β-[from UC(p, X)]) Measured β-delayed Eα αα-coinc 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
Fecha de publicación :	24-oct-2003
Editor:	Elsevier
Citación :	Physics Letters B 576(1-2): 55–61 (2003)
Resumen:	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.
Descripción :	7 pages, 1 table, 4 figures.-- PACS nrs.: 23.40.Hc; 21.10.Hw; 27.20.+n.-- Printed version published Dec 4, 2003.
Versión del editor:	http://dx.doi.org/10.1016/j.physletb.2003.09.073
URI :	http://hdl.handle.net/10261/7559
DOI:	10.1016/j.physletb.2003.09.073
ISSN:	0370-2693
Aparece en las colecciones:	(CFMAC-IEM) Artículos

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