Feeding of the Residual States with GDR gamma Decay Studied by nuBall Coupled with PARIS

In the paper, experimental results of high-energy gamma GDR (Giant Dipole Resonance) decay from the Pt compound nucleus associated with the decay channel leading to the Pt evaporation residue are presented. The measurement, which was performed with the use of coupled nuBall and PARIS arrays, aimed to investigate the link between deformation of a hot nucleus and different deformations of the residual states. The high-energy gamma rays from the GDR decay measured using the PARIS phoswiches provided information on compound nucleus properties, particularly on its effective shape. Discrete transitions in evaporation residues, measured by the nuBall array, were used to select the final products of specific deformations. As a result, the GDR strength functions measured for the particular decay paths were obtained.