Favoured superdeformed states in 89Tc
B. Cederwall1 - T. Bäck1 - R. Wyss1 - A. Johnson1 - J. Cederkäll1 - M. Devlin2 - J. Elson2 - D.R. LaFosse2 - F. Lerma2 - D.G. Sarantites2 - R.M. Clark3 - P. Fallon3 - I.Y. Lee3 - A.O. Macchiavelli3 - R.W. Macleod3
1 Department of Physics, Royal Institute of Technology, 104 05 Stockholm, Sweden
2 Chemistry Department, Washington University, St. Louis, MO 63130, USA
3 Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720 USA
Received: 6 July 1999 Communicated by B. Herskind
A superdeformed band consisting of a cascade of ten -ray transitions has been identified and assigned to the nucleus 89Tc, close to the proton dripline. The quadrupole moment of the band ( , 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 -ray flux in the 89Tc exit channel, the band is among the most intense superdeformed bands observed to date.
21.10.Re Collective levels - 21.60.Cs Shell model - 23.20.Lv Gamma transitions and level energies - 27.50.+e 59 A 89