A new coincidence module using pulse-mixing method applied in the 4 (LS)- coincidence system with TDCR detector

Application of a new coincidence module using the pulse-mixing method in the 4 pi(LS)-gamma coincidence system with TDCR detector in the beta channel (TDCRG) is presented. The pulse-mixing method extended for the TDCR system with gamma channel was compared with the classical coincidence method where the coincidence resolving time is introduced. The characteristics of the resolving and dead time of the above two methods were investigated. The level of accidental coincidences in the system was determined. The new developed coincidence module was validated by activity measurement of a set of Cr-51, Mn-54, Co-60, Zn-65, Sr-8(5) and Cs-134 standards.