Abstract: A stimulable phosphor panel is provided comprising a bariumfluorohalide phosphor characterized in that in said phosphor at least 1 mole % of the Ba-ions are replaced by Ca-ions and at least 10% of the total amount of Ca-ions are located closely to the surface of the phosphor particles.A method for producing said phosphor is also provided. The use of said phosphor in a method for recording and reproducing a radiation image is disclosed.

Abstract: A radiation image recording and reproducing method is provided, comprising the steps of:i. causing a radiation image storage panel containing a photostimulable phosphor to absorb radiation having passed through an object or having been radiated from an object,ii. exposing said image storage panel to stimulating rays to release the radiation energy stored therein as light emission, the stimulating rays being electromagnetic waves having a wavelength within the range of 700-900 nmiii. detecting the emitted light, characterised in that said photostimulable phosphor corresponds to the general formula:Ba.sub.1-x-y"-z-r Sr.sub.x Pb.sub.y" Cs.sub.2r Eu.sub.z F.sub.2-a-b Br.sub.a I.sub.b,wherein0.ltoreq.x.ltoreq.0.30, 10.sup.-4 <y"<10.sup.-3,10.sup.-7 <z<0.15, 0.ltoreq.r<0.05, 0.75.ltoreq.a+b.ltoreq.1.00, 0.05<b<0.20.