| Autor: |
Jones, G GAJ, Podolyk, Zs ZP, Walker, P PMW, Regan, P PHR, Angelis, G GdA, Axiotis, M MA, Bazzacco, D DB, Bizzeti, P PGB, Brandolini, F FB, Broda, R RB, Bucurescu, D DB, Farnea, E EF, Gelletly, W WG, Gadea, A AG, Ionescu-Bujor, M MI, Iordachescu, A AI, Krll, Th TK, Langdown, S SDL, Lunardi, S SL, Marginean, N NM, Martinez, T TM, Medina, N NHM, Quintana, B BQ, Rubio, B BR, Ur, C CAU, Valiente-Dobn, J JJV, Williams, S SJW, Zhang, Y YHZ |
| Zdroj: |
Journal of Physics G: Nuclear and Particle Physics; October 2005, Vol. 31 Issue: 10 p1891-1894, 4p |
| Abstrakt: |
Several nuclei in the A ∼ 190 region have been studied following deep-inelastic reactions using a 460 MeV 82Se projectile impinging upon a thick 192Os target. The GASP array (at the Legnaro National Laboratory in Italy) was used to measure the resulting γ-decays. The previously reported near-yrast structure of 191Os is extended to a isomer, at an energy of 2640 keV. Branching ratios for ΔI = 1 and ΔI = 2 transitions in the band have been measured, giving |(gK − gR)/Q0| = 0.022(3) and 0.024(7) for transitions from the and states respectively. These are consistent with the theoretical calculation for the proposed ν11/2+[615] configuration of the band. Nilsson plus BCS calculations reveal that the isomer is likely to have a {ν11/2+[615] ⊗ π11/2−[505] ⊗ π9/2−[514]} configuration with . This yields an implied reduced hindrance of fν= 1.9, in accordance with empirical systematics of K isomers in the A ∼ 180–190 region. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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