RARE EARTH ACTIVATED ALKALINE EARTH METAL FLUOROHALIDE PHOTOSTIMULABLE PHOSPHOR AND RADIATION IMAGE CONVERSION PANEL USING THE SAME

摘要

Provided are a rare earth activated alkaline earth metal fluorohalide photostimulable phosphor which can provide a high quality radiation image and also is reduced in the lowering of brightness by the X-ray damage due to repeated use; and a radiation image conversion panel using the above phosphor. Use is made of a rare earth activated alkaline earth metal fluorohalide photostimulable phosphor which is represented by the following general formula (1) and exhibits a width of a spectrum having an intensity being 80 % relative to the maximum luminous intensity of 23.0 nm or less. General formula (1) Ba<SUB>(1-x)</SUB>M<SUP>2</SUP> <SUB>(x)</sub