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Closed Access item Identification of yrast high-K intrinsic states in Os-188

Authors:Modamio, V.
Jungclaus, A.
Podolyak, Z.
Shi, Y.
Xu, F.R.
Algora, Alejandro
Bazzacco, D.
Escrig, D.
Fraile, L.M.
Lenzi, S.
Marginean, N.
Martinez, T.
Napoli, D. R.
Schwengner, R.
Ur, C. A.
Issue Date:17-Feb-2009
Publisher:American Physical Society
Citation:Phys. Rev. C 79, 024310 (2009)
Abstract:The 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.
Publisher version (URL):http://dx.doi.org/10.1103/PhysRevC.79.024310
URI:http://hdl.handle.net/10261/15977
ISSN:0556-2813
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