Excited states and reduced transition probabilities in Os-168

T. Grahn, S. Stolze, D.T. Joss, R.D. Page, B. Sayğı, D. O'Donnell, M. Akmali, K. Andgren, L. Bianco, D. M. Cullen, A. Dewald, P.T. Greenlees, K. Heyde, H. Iwasaki, U. Jakobsson, P. Jones, D. S. Judson, R. Julin, S. Juutinen, S. KetelhutM. Leino, N Lumley, P. J. R. Mason, O. Möller, K. Nomura, M. Nyman, A. Petts, P. Peura, N. Pietralla, Th. Pissulla, P. Rahkila, P. J. Sapple, J. Sarén, C. Scholey, J. Simpson, J. Sorri, P. D. Stevenson, J. Uusitalo, H.V. Watkins, J. L. Wood

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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 Köln plunger device. The 168Osγ 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.
Original languageEnglish
Article number044327
JournalPhysical Review C
Volume94
Issue number4
DOIs
Publication statusPublished - 28 Oct 2016
Externally publishedYes

Cite this

Grahn, T., Stolze, S., Joss, D. T., Page, R. D., Sayğı, B., O'Donnell, D., Akmali, M., Andgren, K., Bianco, L., Cullen, D. M., Dewald, A., Greenlees, P. T., Heyde, K., Iwasaki, H., Jakobsson, U., Jones, P., Judson, D. S., Julin, R., Juutinen, S., ... Wood, J. L. (2016). Excited states and reduced transition probabilities in Os-168. Physical Review C, 94(4), [044327 ]. https://doi.org/10.1103/PhysRevC.94.044327