Spectroscopy of the neutron-deficient nucleus 167Os91

O'Donnell, D. et al. (2009) Spectroscopy of the neutron-deficient nucleus 167Os91. Physical Review C, 79(6), 064309. (doi: 10.1103/PhysRevC.79.064309)

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Publisher's URL: http://dx.doi.org/10.1103/PhysRevC.79.064309


Excited states of the nucleus Os167 have been populated by the reaction Mo92(Kr78,2pn). The JUROGAM γ-ray detector array has been used in conjunction with the RITU gas-filled separator and the GREAT spectrometer to observe prompt γ rays in coincidence with recoiling fusion-evaporation residues and their subsequent decay by αparticle emission. By correlating prompt γ radiation with the characteristic α radioactivity of Os167, it has been possible to extend the level scheme for this nucleus significantly. In particular, an extension of the yrast band and four previously unobserved bands are reported. In addition, the recoil distance Doppler-shift method was used to determine a lifetime of τ=20(4) ps for The Iπ=17/2+ state in Os167. Hence, the level of collectivity and magnitude of deformation of the low spin yrast band of this nucleus is established.

Item Type:Articles
Glasgow Author(s) Enlighten ID:O'Donnell, Dr David
Authors: O'Donnell, D., Grahn, T., Joss, D., Simpson, J., Scholey, C., Andgren, K., Bianco, L., Cederwall, B., Cullen, D., Dewald, A., Ganioğlu, E., Hornillos, M., Greenlees, P., Hadinia, B., Iwasaki, H., Jakobsson, U., Jolie, J., Jones, P., Judson, D., Julin, R., Juutinen, S., Ketelhut, S., Labiche, M., Leino, M., Lumley, N., Mason, P., Möller, O., Nieminen, P., Nyman, M., Page, R., Pakarinen, J., Paul, E., Petri, M., Petts, A., Peura, P., Pietralla, N., Pissulla, T., Rahkila, P., Ruotsalainen, P., Sandzelius, M., Sapple, P., Sarén, J., Sorri, J., Thomson, J., Uusitalo, J., and Watkins, H.
Journal Name:Physical Review C
Publisher:American Physical Society
ISSN (Online):1089-490X

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