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Phys. Rev. Lett. 83, 2143–2146 (1999)

Octupole Correlations in the Pu Isotopes: From Vibration to Static Deformation?

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I. Wiedenhöver1, R. V. F. Janssens1, G. Hackman2, I. Ahmad1, J. P. Greene1, H. Amro1,3a,3b, P. K. Bhattacharyya4, M. P. Carpenter1, P. Chowdhury5, J. Cizewski1,6, D. Cline7, T. L. Khoo1, T. Lauritsen1, C. J. Lister1, A. O. Macchiavelli8, D. T. Nisius1, P. Reiter1, E. H. Seabury5, D. Seweryniak1, S. Siem1,9, A. Sonzogni1, J. Uusitalo1, and C. Y. Wu7
1Argonne National Laboratory, Argonne, Illinois 60439
2University of Kansas, Lawrence, Kansas 66045
3aNorth Carolina State University, Raleigh, North Carolina 27695,
3band Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708-0308
4Purdue University, West Lafayette, Indiana 47907
5University of Massachusetts, Lowell, Massachusetts 01854
6Rutgers University, New Brunswick, New Jersey 08903
7University of Rochester, Rochester, New York 14627
8Lawrence Berkeley National Laboratory, Berkeley, California 94720
9University of Oslo, Oslo, Norway

Received 29 April 1999; published in the issue dated 13 September 1999

In a series of measurements with Gammasphere, striking differences were found between the yrast and negative parity bands in 238–240Pu and those in 241–244Pu. These differences can be linked to variations with mass of the strength of octupole correlations. At the highest spins, 238–240Pu are found to exhibit properties associated with stable octupole deformation, suggesting that a transition with spin from a vibration to stable deformation may have occurred.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.83.2143
DOI:
10.1103/PhysRevLett.83.2143
PACS:
21.10.Re, 23.20.Lv, 25.70.De, 27.90.+b
 
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