EUROPIUM DOPED CESIUM BROMO IODIDE SCINTILLATOR AND DETECTORS THEREOF WITH IMPROVED CONVERSION EFFICIENCY

摘要

To develop a scintillator that shows a very low afterglow level and shows a high conversion efficiency.SOLUTION: There is provided a scintillator comprising CsBrIdoped with europium (CsBrI:Eu, where x0.5, obtained by annealing CsBrI:Eu material at a temperature of 50°C to 280°C. EPR spectra of such obtained scintillator measured at room temperature at a frequency of 34 GHz, shows a maximum in signal height at a magnetic field of 1200 mT, the signal height at 1090 mT and 1140 mT do not exceed 40%, in which the normalized signal height percentage at 1200 mT is calculated to be 100%.SELECTED DRAWING: Figure 1