The low-spin structure of ^136Ba reactions was studied at the University of Kentucky with the (n,n'γ) reaction. The primary goal was the identification of the two-phonon mixed-symmetry states built on the first 2^+ms at 2129 keV. Furthermore, the systematics and the quadrupole-octupole multi-phonon excitations received special focus. The excitation functions performed from 2.2 MeV to 3.9 MeV helped to determine the threshold for the γ-ray transitions and hence their placement in the level scheme. Lifetimes, spins, multipolarities, and branching ratios obtained from angular distributions at 2.5 MeV and 3.5 MeV will be presented.
APS Division of Nuclear Physics Meeting Abstracts
- Pub Date:
- October 2007