Observation of large scissors resonance strength in actinides
  The orbital M1-scissors resonance (SR) has been measured for the first time in the quasi-continuum of actinides. Particle-gamma coincidences are recorded with deuteron and 3He induced reactions on 232Th. The residual nuclei 231,232,233Th and 232,233Pa show an unexpectedly strong integrated strength of $B_{M1} = 11-15 \mu_{n}^{2}$ in the Egamma=1.0 - 3.5 MeV region. The increased gamma-decay probability in actinides due to the SR is important for cross-section calculations for future fuel cycles of fast nuclear reactors and may also have impact on stellar nucleosynthesis. 
M. Guttormsen, L. A. Bernstein, A. B\"urger, A. G\"orgen, F. Gunsing,   T. W. Hagen, A. C. Larsen, T. Renstr{\o}m, S. Siem, ...
nucl-ex