Gamma–gamma coincidence spectrometer setup for neutron activation analysis and nuclear structure studies

The gamma–gamma coincidence spectrometer has been setup at the tangential neutron beam port of the Dalat Nuclear Research Reactor (DNRR) for neutron activation analysis and nuclear structure studies. The selected parameters were chosen by new method, and the quality of parameters was evaluated with peak area ratios of spectra which have been measured by two detectors in event–event coincidence mode. The experimental setup, its performance and analysis method using 60Co source and 35Cl( n , 2 γ )36Cl reaction are presented in this paper.