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Favoured superdeformed states in 89Tc |
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| Authors: | B. Cederwall T. Bäck R. Wyss A. Johnson J. Cederkäll M. Devlin J. Elson D.R. LaFosse F. Lerma D.G. Sarantites R.M. Clark P. Fallon I.Y. Lee A.O. Macchiavelli R.W. Macleod |
| Affiliation: | (1) Department of Physics, Royal Institute of Technology, 104 05 Stockholm, Sweden, SE;(2) Chemistry Department, Washington University, St. Louis, MO 63130, USA, US;(3) Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720 USA, US |
| Abstract: | A superdeformed band consisting of a cascade of ten γ-ray transitions has been identified and assigned to the nucleus 89Tc, close to the proton dripline. The quadrupole moment of the band (Q t= 6.7+3.0 −2.3 eb, as measured by the Residual Doppler Shift Method) as well as a large dynamic moment of inertia point to a highly elongated shape. With a relative population of approximately 15% of the γ-ray flux in the 89Tc exit channel, the band is among the most intense superdeformed bands observed to date. Received: 6 July 1999 |
| Keywords: | PACS: 21.10.Re Collective levels – 21.60.Cs Shell model – 23.20.Lv Gamma transitions and level energies – 27.50.+e 59 < A < 89 |
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