1. Excited states and reduced transition probabilities in Os 168
- Author
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Grahn, Tuomas, Stolze, Sanna, Joss, D. T., Page, R. D., Sayğ, B., O'Donnell, D., Akmali, M., Andgren, K., Bianco, L., Cullen, D. M., Dewald, A., Greenlees, Paul, Heyde, K., Iwasaki, H., Jakobsson, Ulrika, Jones, Peter, Judson, D. S., Julin, Rauno, Juutinen, Sakari, Ketelhut, Steffen, Leino, Matti, Lumley, N., Mason, P. J. R., Möller, O., Nomura, K., Nyman, Markus, Petts, A., Peura, Pauli, Pietralla, N., Pissulla, Th., Rahkila, Panu, Sapple, P. J., Sarén, Jan, Scholey, Catherine, Simpson, J., Sorri, Juha, Stevenson, P. D., Uusitalo, Juha, Watkins, H. V., and Wood, J. L.
- Subjects
excited states - Abstract
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. peerReviewed
- Published
- 2016