The geometry model of YAP:Ce scintillation detector was constructed and the response to α-rays of polished YAP:Ce scintillator crystals read out by photomultipliers has been studied by means of Monte Carlo simulation program.The simulations took into account the radioactive decay of nuclides,the production of scintillation photons and the optical properties like absorption,reflection,and diffusion during the passage of the light through the scintillator crystal into the photomultiplier tube.All events related to the photons that transport into photomultiplier were recorded.After completion of the simulation,the simulated spectra were obtained using recorded information.The simulated spectra of 241 Am and 239 Pu were fit well with the spectra obtained in the experiments.The reliability and rationality of this simulation is confirmed by comparing with the measurements.The code of simulation can provide technical support and reference for the relevant experiments and practical applications of scintillator detectors for measuring α radionuclides.
关键词
MC模拟计算/YAP:Ce闪烁体/α放射性核素
Key words
Monte Carlo simulation/YAP:ce scintillator/alpha radionuclides
维普
万方数据