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The level densities of 50,51V and 44,45Sc have been extracted using the (³He,αγ) and (³He,³He'γ) reactions, respectively. Also the radiative strength functions of 50,51V will be presented. The high -energy part of the measured strength functions fits well with the tail of the giant electric dipole resonance. A significant enhancement over the predicted strength in the region of Eγ ≤ 3 MeV is observed. This feature is, at present, without any theoretical explanation. [ABSTRACT FROM AUTHOR]

High-spin states of the nucleus 163Lu have been populated through the fusion-evaporation reaction 139La(29Si, 5n) with a beam energy of 157 MeV. In addition to the two lowest excited triaxial strongly deformed (TSD) bands, recently interpreted as one- and two-phonon wobbling excitations, a third excited TSD band has been firmly established decaying to the yrast TSD band. The assignment of this band as a three-quasiparticle band shows together with the normal deformed (ND) level scheme the presence not only of shape coexistence between ND and TSD structures, but also an interplay of wobbling and quasiparticle excitations in the triaxial strongly deformed potential well of 163Lu. [ABSTRACT FROM AUTHOR]

High-spin states in 165Lu were populated in the 139La(30Si,4n) 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. [Copyright &y& Elsevier]