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Phys. Rev. Lett. 78, 614 - 617 (1997)

Interband Transitions between Superdeformed Bands in 87Nb: Evidence for a Superintruder Orbital
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D. R. LaFosse1, M. Devlin1, M. Korolija1, F. Lerma1, D. G. Sarantites1, Y. A. Akovali2, C. Baktash2, C. J. Gross2, D. W. Stracener2, J. Döring3, G. D. Johns3, S. L. Tabor3, F. E. Durham4, I. Y. Lee5, A. O. Macchiavelli5, and W. Rathbun5
1Chemistry Department, Washington University, St. Louis, Missouri 63130
2Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
3Department of Physics, Florida State University, Tallahassee, Florida 32306
4Department of Physics, Tulane University, New Orleans, Louisiana 70118
5Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720

Received 9 October 1996

Four superdeformed bands have been observed in 87Nb. Transition quadrupole moment measurements on three of the bands confirm superdeformed shapes. Two of the bands were observed to mutually interact, and cross transitions between them have been observed. This is the first time such behavior has been observed in mass 80 superdeformed bands. Once this interaction is accounted for, a second crossing appears in one of the bands. This crossing is interpreted as evidence for the occupation of the i13/2 superintruder orbital, making 87Nb the lightest nucleus by far in which the shape-driving properties of this orbital can be studied.


©1997 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v78/p614
DOI: 10.1103/PhysRevLett.78.614
PACS: 21.10.Re, 21.60.Cs, 23.20.Lv, 27.50.+e

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