Electromagnetic dipole strength of ¹³⁶Ba below the neutron separation energy

The electromagnetic dipole strength of the nucleus 136Ba has been investigated at two facilities. At the bremsstrahlung facility at the ELBE accelerator of the Helmholtz-Zentrum Dresden-Rossendorf, two measurements were performed with electron energies of 7.0 and 11.4 MeV. Photon scattering on the same nucleus has been investigated at the HI$gS facility of the Triangle Universities Nuclear Laboratory.
The GEANT4 code has been used to determine detector response and non-nuclear scattered events. Thus it is possible to account for the dipole strength in the quasi-continuum of unresolvable transitions. A statistical code was used to simulate inelastic transitions and to determine the branching ratios of transitions to the ground-state. The resulting photo-absorption cross section is compared to QRPA and RQTBA calculations.