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Título

Excited bands and signature dependent electromagnetic decay properties in neutron-rich 159,161,163Dy

AutorJungclaus, Andrea ; Binder, B.; Dietrich, A.; Härtlein, T.; Bauer, H.; Gund, Ch.; Pansegrau, D.; Schwalm, D.; Bazzacco, D.; Farnea, E.; Lunardi, S.; Rossi-Alvarez, C.; Ur, C.; De Angelis, G.; Gadea, Andrés ; Napoli, D. R.; Zhou, X. R.; Sun, Y.
Fecha de publicación12-mar-2003
EditorAmerican Physical Society
CitaciónPhysical Review C - Nuclear Physics 67: 343021-3430214 (2003)
ResumenHigh-spin states of the neutron-rich odd nuclei 159,161,163Dy have been studied using the incomplete fusion reactions 158,160Gd(7Li,(p,d,t)xn). In 159Dy, the band crossing in the 11/2-[505] band has been observed for the first time. Moreover, 11 E1 transitions connecting both signatures of the 3/2-[521] band to the 5/2+[642] band have been observed in this nucleus; the deduced B(E1)/B(E2) ratios as well as the B(M1)/B(E2) ratios for transitions within the 3/2-[521] band show a pronounced signature dependence. In 161Dy and 163Dy, rotational bands have been extended to significantly higher spin values. In 161Dy, the sequences built on the neutron 5/2-[523] and 3/2-[521] states have been followed up to spin 49/2- and 33/2-, respectively, and in both cases upbends have been observed around hℏ ω ≈0.26 MeV. In addition, a new band most probably built on the 11/2-[505] single-particle state has been identified in this isotope. In 163Dy, both the 5/2-[523] ground state band and the structure built on the 5/2+[642] neutron orbit have been extended up to the 45/2- and 49/2+ states, respectively. However, no band crossing has been observed in this nucleus. The properties of the observed bands in 159,161,163Dy are discussed and compared to calculations performed within the projected shell model. ©2003 The American Physical Society
Descripción14 págs.; 12 figs.; 3 tabs. ; PACS number(s): 23.20.Lv, 27.70.1q, 21.10.Re
Versión del editorhttp://dx.doi.org/10.1103/PhysRevC.67.034302
URIhttp://hdl.handle.net/10261/141593
DOI10.1103/PhysRevC.67.034302
Identificadoresdoi: 10.1103/PhysRevC.67.034302
issn: 0556-2813
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