Phys. Rev. C
79,
031305(R)
(2009)
[4 pages]
Weakly deformed oblate structures in 76198Os122
Zs. Podolyák et al.
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Zs. Podolyák1,*, S. J. Steer1, S. Pietri1, F. R. Xu2, H. L. Liu2, P. H. Regan1, D. Rudolph3, A. B. Garnsworthy1,4, R. Hoischen3,5, M. Górska5, J. Gerl5, H. J. Wollersheim5, T. Kurtukian-Nieto6, G. Benzoni7, T. Shizuma1,8, F. Becker5, P. Bednarczyk5,9, L. Caceres5,10, P. Doornenbal5, H. Geissel5, J. Gre¸bosz5,9, A. Kelic5, I. Kojouharov5, N. Kurz5, F. Montes5, W. Prokopowicz5,9, T. Saito5, H. Schaffner5, S. Tashenov5, A. Heinz4, M. Pfützner11, A. Jungclaus10, D. L. Balabanski12, C. Brandau1, A. M. Bruce13, W. N. Catford1, I. J. Cullen1, Zs. Dombrádi14, E. Estevez6, W. Gelletly1, G. Ilie15, J. Jolie15, G. A. Jones1, M. Kmiecik9, F. G. Kondev16, R. Krücken17, S. Lalkovski13, Z. Liu1, A. Maj9, S. Myalski9, S. Schwertel17, P. M. Walker1, E. Werner-Malento5,18, and O. Wieland7
1Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
2Department of Technical Physics, Peking University, Beijing 100871, People's Republic of China
3Department of Physics, Lund University, S-22100 Lund, Sweden
4WNSL, Yale University, New Haven, Connecticut 06520-8124, USA
5GSI, Planckstrasse 1, D-64291 Darmstadt, Germany
6Universidad de Santiago de Compostela, E-15706 Santiago de Compostela, Spain
7INFN, Universitá degli Studi di Milano, I-20133 Milano, Italy
8Japan Atomic Energy Agency, Kyoto 619-0215, Japan
9The Henryk Niewodniczański Institute of Nuclear Physics, PL-31-342 Kraków, Poland
10Departamento de Fisica Teórica, Universidad Autonoma de Madrid, E-28049 Madrid, Spain
11IEP, Warsaw University, Hoźa 69, PL-00-681 Warsaw, Poland
12Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia, Bulgaria
13School of Engineering, University of Brighton, Brighton BN2 4GJ, United Kingdom
14Institute for Nuclear Research, ATOMKI, H-4001 Debrecen, Hungary
15IKP, Universität zu Köln, D-50937 Köln, Germany
16Nuclear Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
17Physik Department E12, Technische Universität München, Garching, Germany
18Institute of Physics PAS, Al. Lotnikow 32/46, PL-02-668 Warsaw, Poland
Received 23 January 2009; published 16 March 2009
Gamma rays de-exciting isomeric states in the neutron-rich nucleus 76198Os122 have been observed following relativistic projectile fragmentation of a 1 GeV per nucleon 208Pb beam. The ground-state band has properties compatible with oblate deformation. The evolution of the structure of Os isotopes characterized by sudden prolate-oblate shape change is discussed and contrasted with the smooth change known in the Pt chain.
© 2009 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevC.79.031305
DOI:
10.1103/PhysRevC.79.031305
PACS:
25.70.Mn, 21.10.Re, 27.80.+w
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