Phosphor and radiation image storage panel employing the same

摘要

A divalent europium activated barium fluorohalide phosphor having the formula (I): (Ba1-a,MIIa)FXxbNaX'xc{Si}xd{Al}:xEu2+(I) in which MII is at least one alkaline earth metal selected from the group consisting of Ca and Sr; each of X and X' is at least one halogen selected from the group consisting of Cl, Br and I; {Si} and {Al} are respectively Si component and Al Component; a, b and x are numbers satisfying the conditions of 0