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Phys. Rev. C 67, 014312 (2003) [7 pages]

In-beam γ-ray spectroscopy of 172Pt

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M. Danchev1,*, D. J. Hartley1,†, F. G. Kondev2, M. P. Carpenter3, R. V. F. Janssens3, L. L. Riedinger1, K. H. Abu Saleem3, I. Ahmad3, H. Amro4, D. L. Balabanski1,*, J. A. Cizewski5, C. N. Davids3, A. Heinz3, T. L. Khoo3, T. Lauritsen3, C. J. Lister3, W. C. Ma4, G. L. Poli3, J. Ressler3, W. Reviol6, M. B. Smith5, D. Seweryniak3, and I. Wiedenhöver3,‡
1Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996
2Technology Development Division, Argonne National Laboratory, Argonne, Illinois 60439
3Physics Division, Argonne National Laboratory, Argonne, Illinois 60439
4Department of Physics, Mississippi State University, Mississippi State, Mississippi 39762
5Department of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903
6Chemistry Department, Washington University, St. Louis, Missouri 63130

Received 11 July 2002; published 22 January 2003

Collective structures in 172Pt have been investigated by measuring in-beam γ rays with mass selection and the recoil-decay tagging technique. The discrepancy in the ground-state band from previous studies has been resolved, and a new collective structure that is likely based on an octupole vibration has been identified. A band mixing model is used to determine the properties of the competing near-spherical and deformed ground-state sequences in the light Os-Pt-Hg-Pb region. Evidence for a reduction of deformation in the deformed vacuum structure below N=98 is presented.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.67.014312
DOI:
10.1103/PhysRevC.67.014312
PACS:
21.10.Re, 23.20.Lv, 21.10.Tg

*Permanent address: Faculty of Physics, St. Kliment Ohridski University of Sofia, BG-1164 Sofia, Bulgaria.

†Present address: Department of Physics, United States Naval Academy, Annapolis, Maryland 21402.

‡Present address: Department of Physics, Florida State University, Tallahassee, Florida 32306.

 
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