Speaker
Description
The giant dipole resonance (GDR) is a fundamental nuclear excitation that dominates the dipole response of all nuclei. The present work aims at quantifying the branching ratio of the decay of the GDR of $^{154}$Sm and $^{140}$Ce, via emission of γ-rays or neutrons as a function of excitation energy. Simultaneously to a nuclear resonance fluorescence (NRF) measurement an activation measurement has been performed at the HIγS facility. By determining the activation of these targets and then comparing to the GDR-NRF events that are observed, we will determine the γ-to neutron-decay branching ratio. The data, their analysis and first results will be presented and discussed.
This work is supported by the LOEWE program under grant Nuclear Photonics and within the Hessian cluster project ELEMENTS.
