Abstract
High uniformity of light output is required for scintillators utilized in detectors for high resolution X-ray CT. It was found that the uniformity of light output of Gd2O2S: Pr ceramics scintillator decreased with nonuniformity in B content in the sintered body. The B content depends on the particle size; raw material powders with smaller particle size contain higher B content. It was thought that the nonuniformity in B content in the sintered body was caused by the difference in the content of the fractions of smaller particles at each part of the compaction body.
