Phosphor and radiographic intensifying screen

摘要: A divalent europium activated complex halide phosphor having the formula: Me.sup.II FX·aMe.sup.I X'·bMe'.sup.II X".sub.2 ·cMe III X"' 3 ·dA:eEu 2+ in which Me II is at least one alkaline earth metal selected from group consisting of Ba, Sr and Ca; I alkali Li, Na, K, Rb Cs; Me' Be Mg; trivalent Al, Ga, In Tl; a oxide; X halogen consistingo Cl, Br I; each X', X" F, a, b c are numbers satisfying conditions 0≦a≦10 -2 , 0≦b≦10 0≦c≦10 a+b+c≧10 -6 ; d e 0≦d≦0.5 0≦e≦0.2, respectively. radiographic intensifying screen containing said also disclosed.