Cross-talk estimation of the hybrid γ-ray detector array through GEANT4 simulation

High Purity Germanium (HPGe) detector remains the best energy-resolving apparatus for nuclear structure studies using discrete γ-ray spectroscopy. On the other way, the LaBr₃(Ce) detector can open a new door to investigate the nuclear transition strength by measuring the lifetime of the nuclear state in the range of a few hundred pico-second. One can eliminate the crosstalk background with proper choice of energy and time coincidence window. The main advantage of coupling these two types of detectors in an array is to clean the background of the time difference spectrum of LaBr₃(Ce) for lifetime measurement of nuclear state with energy gate on the clover HPGe detector