14 research outputs found

    Four-quasiparticle high-K band in

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    High-spin states have been populated in 130Ce, using the 100Mo(34S, 4nÎł) reaction at 155 MeV. A new strongly coupled structure has been found and is interpreted as based on a mixed neutron-proton high-K four-quasiparticle configuration

    Excited states and reduced transition probabilities in Os 168

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    The level scheme of the neutron-deficient nuclide 168Os has been extended and mean lifetimes of excited states have been measured by the recoil distance Doppler-shift method using the JUROGAM γ -ray spectrometer in conjunction with the IKP Koln plunger device. The ¨ 168Os γ rays were measured in delayed coincidence with recoiling fusion-evaporation residues detected at the focal plane of the RITU gas-filled separator. The ratio of reduced transition probabilities B(E2; 4+ 1 → 2+ 1 )/B(E2; 2+ 1 → 0+ 1 ) is measured to be 0.34(18), which is very unusual for collective band structures and cannot be reproduced by interacting boson model (IBM-2) calculations based on the SkM* energy-density functional.peerReviewe
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