Author/Authors :
A Linnemann، نويسنده , , P von Brentano، نويسنده , , J Eberth، نويسنده , , J Enders، نويسنده , , A Fitzler، نويسنده , , C Fransen، نويسنده , , E Guliyev، نويسنده , , R.-D Herzberg، نويسنده , , Kaubler، L. نويسنده , , A.A. Kuliev، نويسنده , , P. Von Neumann-Cosel، نويسنده , , N Pietralla، نويسنده , , H Prade، نويسنده , , A Richter، نويسنده , , R Schwengner، نويسنده , , H.G. Thomas، نويسنده , , D Weisshaar، نويسنده , , I Wiedenh?ver، نويسنده ,
Abstract :
A nuclear resonance fluorescence experiment with two highly efficient EUROBALL Cluster detectors has been performed on the γ-soft nucleus 194Pt. Dipole excitations were observed between 2 and 4 MeV excitation energy. They are tentatively interpreted as the main fragments of the scissors mode based on the measured excitation strengths and a comparison to microscopic calculations in the framework of the quasiparticle random phase approximation (QRPA). The data indicate large differences to the neighbouring isotope 196Pt: a doubling of the observed dipole strength and a shift of the energy centroid by about 600 keV. None of the currently available models is able to reproduce these features consistently in both nuclei.
Keywords :
Observed dipole strength for Ex?4 MeV , Deduced M1 scissors mode strength and energy centroid , Comparison to 196Pt , ??) , 194Pt(?
