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Título : B(GT) strength from beta-decay measurements and inferred shape mixing in Kr-74
Autor : Poirier, E., Maréchal, F., Dessagne, Ph., Algora, Alejandro, García Borge, María José, Cano Ott, Daniel, Caspar, J. C., Courtin, S., Devin, J., Fraile, Luis M., Gelletly, W., Heitz, G., Jungclaus, Andrea, Le Scornet, G., Miehé, Ch., Nácher, Enrique, Rubio, Berta, Sarriguren, Pedro, Taín, José Luis, Tengblad, Olof, Weber, C.
Palabras clave : Proton drip-line
Level density
Sr isotopes
[PACS] Single-particle levels and strength functions
[PACS] Beta decay: Relation with nuclear matrix elements and nuclear structure
[PACS] Properties of specific nuclei listed by mass ranges: 59 ≤ A ≤ 89
Fecha de publicación : 3-Mar-2004
Editor: American Physical Society
Citación : Physical Review C 69(3): 034307 (2004)
Resumen: A total absorption spectrometer, dedicated to the study of very short-lived atomic species, has been built and installed at the CERN/ISOLDE mass separator. The beta decay of the neutron-deficient Kr-74 nucleus has been studied using this new device. The Gamow-Teller strength distribution has been observed over most of the Q(EC) window, and a total strength of 0.69(3) g(A)(2)/4pi has been measured for states with excitation energy below 3 MeV. Shape mixing in the Kr-74 ground state is inferred from a comparison of the experimental strength distribution with self-consistent, deformed, quasiparticle-random-phase-approximation calculations.
Descripción : 8 pages, 5 figures.-- PACS nrs.: 21.10.Pc, 23.40.Hc, 27.50.+e.
Versión del editor: http://dx.doi.org/10.1103/PhysRevC.69.034307
URI : http://hdl.handle.net/10261/5958
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.69.034307
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