Abstract
High-spin states in 183Os have been studied using the 170Er(18O,5n) reaction at a beam energy of 85 MeV. Nine rotational bands based on 1-, 3-, 5- and 7-quasiparticle excitations have been observed. Nilsson configurations are assigned for the newly observed bands using g-factors deduced from M1/E2 branching ratios within the bands. In addition, two isomers with Kπ=(43/2+) and (43/2-) have been identified. The Kπ=(43/2+) isomer decays directly to the Kπ=9/2+ ground-state band with a large difference in the K quantum number, ΔK=17. The decay rates are discussed in terms of a tunneling model where high-K (isomeric) and low-K states interact via fluctuations towards triaxial nuclear shapes.
Original language | English |
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Pages (from-to) | 337-370 |
Number of pages | 34 |
Journal | Nuclear Physics A |
Volume | 696 |
Issue number | 3-4 |
DOIs | |
Publication status | Published - Dec 31 2001 |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics