Efficiency comparison between the simulated and experimental results.

Experiment E17011 was carried out at the National Superconducting Cyclotron Laboratory (NSCL) with the goal of determining the half-life for the 0₂⁺ state in ⁸⁰Ge by observing the E0 decay of the 0₂⁺→0₁⁺ transition. At the NSCL, the radioactive source was implanted into a position sensitive Cerium Bromide (CeBr3) scintillator, and the beta decay of the source populates the excited states in the daughter nuclei. An array of 16 LaBr3(Ce) detectors and 16 Segmented Germanium Array (SeGA) detectors were used to detect the delayed γ rays. An important component of the experimental analysis is understanding the efficiency of the detector array. A simulation of the detector efficiency has been carried out using GEANT4. The current state of the comparison between the simulated and experimental efficiencies will be discussed.