Abstract: A radiation image recorded in a stimulable phosphor sheet or plate is visualized by stimulating the phosphor with stimulating rays. Being stimulated by the stimulating rays, the phosphor emits detectable light. The emitted light is detected by a photodetector. The wavelength of the stimulating rays is selected within the range of 600 to 700 nm. The wavelength of the light detected by the photodetector is selected within the range of 300 to 500 nm.

Abstract: A radiation image is recorded on a stimulable phosphor and the recorded image is reproduced by utilizing the stimulability of the phosphor. As the phosphor is used an alkaline earth metal fluorohalide phosphor having high stimulability represented by the formula(Ba.sub.1-x M.sub.x.sup.II)FX:yAwherein M.sup.II is at least one divalent metal selected from the group consisting of Mg, Ca, Sr, Zn and Cd, X is at least one halogen selected from the group consisting of Cl, Br and I, A is at least one element selected from the group consisting of Eu, Tb, Ce, Tm, Dy, Pr, Ho, Nd, Yb and Er, and x and y are numbers satisfying the conditions of 0.ltoreq.x.ltoreq.0.6 and 0.ltoreq.y.ltoreq.0.2.

Abstract: A radiation image is recorded on a stimulable phosphor, and the recorded image is reproduced by utilizing the stimulability of the phosphor. As the phosphor is used at least one of the following phosphors.(a) a copper and lead activated zinc sulfide phosphor ZnS:Cu,Pb).(b) a phosphor included in a group of europium activated barium aluminate phosphors represented by the formulaBaO.xAl.sub.2 O.sub.3 :Euwherein x is a number satisfying the condition of 0.8.ltoreq.x.ltoreq.10.(c) a phosphor included in a group of divalent metal silicate phosphors represented by the formulaM.sup.II O.ySiO.sub.2 :Awherein M.sup.II is at least one divalent metal selected from the group consisting of Mg, Ca, Sr, Zn and Ba, A is at least one element selected from the group consisting of Ce, Tb, Eu, Tm, Pb, Tl, Bi and Mn, and y is a number satisfying the condition of 0.5.ltoreq.y.ltoreq.2.5.