Observation of superdeformed states in 88Mo
T. Bäck1 - B. Cederwall1 - 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 Laboratory, Berkeley, CA, USA 94720
Received: 20 May 1999 / Revised version: 25 August 1999 Communicated by J. Äystö
High-spin states in 88Mo were studied using the germanium detector array in conjunction with the CsI(Tl) charged-particle detector system. Three -ray cascades with dynamic moments of inertia showing similar characteristics to superdeformed rotational bands observed in the neighbouring A=80 region have been identified and assigned to the nucleus 88Mo. The quadrupole moment of the strongest band, deduced by the Residual Doppler Shift Method, corresponds to a quadrupole deformation of . This confirms the superdeformed nature of this band. The experimental data are interpreted in the framework of total routhian surface calculations. All three bands are assigned to two-quasi-particle proton configurations at superdeformed shape.
21.10.Re Collective levels - 21.60.Cs Shell model - 23.20.Lv Gamma transitions and level energies - 27.50.+e 59 A 89