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Phys. Rev. C 71, 041303(R) (2005) [4 pages]

Identification of a pairing isomeric band in 152Sm

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W. D. Kulp1, J. L. Wood1, P. E. Garrett2,3, J. M. Allmond1, D. Cline4, A. B. Hayes4, H. Hua4, K. S. Krane5, R.-M. Larimer6,*, J. Loats5,†, E. B. Norman6,‡, P. Schmelzenbach5,§, C. J. Stapels5, R. Teng4, and C. Y. Wu4
1School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, USA
2Department of Physics, University of Guelph, Guelph, Ontario N0B 1S0, Canada
3TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
4Nuclear Structure Research Laboratory, Department of Physics, University of Rochester, Rochester, New York, 14627
5Department of Physics, Oregon State University,Corvallis, Oregon 97331-6507
6Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720

Received 9 March 2005; published 29 April 2005

A coexisting band structure is identified in 152Sm through γ-ray coincidence spectroscopy following β decay of 152m,gEu and following multistep Coulomb excitation. This structure is interpreted as a pairing isomer analogous to a similar band identified in 154Gd, based on relative B(E2) values for transitions out of the band and two-neutron transfer reaction population of the 0+ and 2+ band members. Systematics for odd-A isotopes near N=90 suggest that there should be a low-lying pairing isomer in 156Dy and similar structures at higher energy in 150Nd and 158Er.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.71.041303
DOI:
10.1103/PhysRevC.71.041303
PACS:
21.10.Re, 23.20.Lv, 27.70.+q

*Deceased.

†Present address: Department of Physics and Engineering, Fort Lewis College, Durango, Colorado 81301, USA.

‡Present address: L-414, Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, CA 94551, USA.

§Present address: Department of Chemistry and Physics, Erskine College, Due West, South Carolina 29639, USA.

 
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