Author/Authors :
G. Schonwasser، نويسنده , , N. Nenoff، نويسنده , , H. Hübel، نويسنده , , G.B. Hagemann ، نويسنده , , P. Bednarczyk، نويسنده , , G. Benzoni، نويسنده , , A. Bracco، نويسنده , , P. Bringel، نويسنده , , R. Chapman، نويسنده , , E. Vardaci and D. Curien، نويسنده , , J. Domscheit، نويسنده , , B. Herskind، نويسنده , , D.R. Jensen، نويسنده , , S. Leoni، نويسنده , , G. Lo Bianco، نويسنده , , W.C. Ma، نويسنده , , A. Maj، نويسنده , , A. Neusser، نويسنده , , S.W. ?deg?rd، نويسنده , , C.M. Petrache ، نويسنده , , et al.، نويسنده ,
Abstract :
High-spin states in 165Lu were populated in the 139LaView the MathML source reaction at a beam energy of 152 MeV and γ-ray coincidences were measured with the EUROBALL spectrometer array. Nine new rotational bands were discovered, known band structures were considerably extended and many inter-band transitions were found. Structures with normal deformation coexist with bands associated with the strongly deformed triaxial energy minima found in calculations. Three of these triaxial bands form a family of wobbling excitations with phonon quanta nw=0, 1 and 2. The wobbling mode is a unique signature of nuclear triaxiality. Configuration assignments are discussed for the observed band structures. An exchange of configuration between two of the new bands due to mixing is observed, resulting in different signature partnerships at low and high spins.
Keywords :
J , ? , configurations , Euroball array , Shape coexistence , Nuclear reactions , triaxial deformation , E=152 MeV , I? , E? , high-spin levels , 139La(View the MathML source) , ??-coin , 165Lu deduced , Measured
