Abstract: A scintillator includes CsBrxI(1-x) doped with Europium (CsBrxI(1-x):Eu) wherein x<0.5, and is obtained by annealing CsBrxI(1-x):Eu material at a temperature from 50° C. to 280° C. The EPR spectrum of the obtained scintillator measured at room temperature at a frequency of 34 GHz shows a maximum signal height at a magnetic field of 1200 mT, and the signal height at 1090 mT and 1140 mT does not exceed 40%, wherein the normalized signal height percentage at 1200 mT is calculated to be 100%. The scintillator is useful in a high energy radiation detection and radiography imaging apparatus.

Abstract: A scintillator includes CsBrxI(1-x) doped with Europium (CsBrxI(1-x):Eu) wherein x<0.5, and is obtained by annealing CsBrxI(1-x):Eu material at a temperature from 50° C. to 280° C. The EPR spectrum of the obtained scintillator measured at room temperature at a frequency of 34 GHz shows a maximum signal height at a magnetic field of 1200 mT, and the signal height at 1090 mT and 1140 mT does not exceed 40%, wherein the normalized signal height percentage at 1200 mT is calculated to be 100%. The scintillator is useful in a high energy radiation detection and radiography imaging apparatus.

Abstract: In a method of annealing a storage phosphor screen comprising a photostimulable phosphor by adding energy in form of heat and/or radiation, said method is applied during a time and in relative humidity conditions such that said phosphor shows peaks in an electron paramagnetic resonance (EPR) spectrum measured at a frequency of 34 GHz, at flux densities of magnetic fields of 880 mT, 1380 mT and 1420 mT, wherein said peaks exceed normalized signal intensity percentages of at least 45% and even of at least 55%, wherein a central peak height in the said EPR-spectrum, measured at a magnetic flux density of 1220 mT, is calculated to have a normalized value of 100%.