CUDAC

The CUDAC chamber is equipped with 32 PIN-diodes (1 x 1cm), placed at backward angles, which correspond to the strongest excitation of the investigated nucleus.

To detect the deexcitation γ-radiation in Coulex studies three HPGe detectors were used, working in coincidence with PIN-diodes.

 

Fig. 1, left: Schematic view of the CUDAC set-up.	right: The CUDAC chamber open to show the silicon detectors inside.

CUDAC has proven to be an excellent tool to study the properties of well deformed nuclei, such as ¹⁶⁵Ho. However, for the less deformed ones, such as Mo isotopes, the gamma detection efficiency was too low and therefore we decided to use a more compact Coulex scattering chamber with a multi-detector germanium array OSIRIS-II.

Nowadays CUDAC is used for experiments other than Coulomb excitation, mostly fusion barrier studies.

The data collected using the CUDAC setup were a basis for 3 PhD theses (two on Coulomb excitation: J. Iwanicki (2002), M. Zielińska (2006) and one on fusion barrier distributions: Ł. Świderski (2005)) as well as for several MSc theses.