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Identification of yrast high-K intrinsic states in Os-188

AutorModamio, V. ; Jungclaus, Andrea ; Podolyák, Zs.; Shi, Y.; Xu, F. R.; Algora, Alejandro ; Bazzacco, D.; Escrig, Diego ; Fraile, Luis M. ; Lenzi, Silvia M.; Marginean, N.; Martínez, T.; Napoli, D. R.; Schwengner, R.; Ur, C. A.
Fecha de publicación17-feb-2009
EditorAmerican Physical Society
CitaciónPhys. Rev. C 79, 024310 (2009)
ResumenThe high-spin structure of the Z=76 nucleus Os-188 has been studied using the incomplete fusion reaction Li-7+W-186. A K-pi=10(+) band has been established up to spin (24(+)) and its crossing with the ground-state band has been studied. In addition, intrinsic high-K states have been identified and on top of two of them, K-pi=7(-) and K-pi=10(-), regular bands have been observed. The K-pi=16(+) and K-pi=18(+) states are yrast whereas the K-pi=14(+) level lies only 33 keV above the yrast line and decays with a low reduced hindrance of f(nu)< 1.3 to the ground-state band (Delta K=14). The results are discussed by means of a systematic comparison with the even-even neighboring nucleus Os-186. Configuration-constrained multiquasiparticle potential-energy-surface calculations have been performed to identify the configurations of multiquasiparticle states.
Versión del editorhttp://dx.doi.org/10.1103/PhysRevC.79.024310
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