Photostimulable phosphor and radiographic application.

摘要

A photostimulable rare earth metal doped barium strontium fluoride phosphor, characterized in that said phosphor is within the scope of following empirical formula (I) : Ba1-x-ySrxMyF2-a-bBraXb:zA wherein : M is at least one member selected from the group consisting of Mg and Ca; X is at least one member selected from the group consisting of Cl and I; x is in the range 0.05 <7> < z <+> or Eu<2><+> together with one or more of the co-dopants selected from the group consisting of Eu<3><+>, Y, Tb, Ce, Tm, Dy, Pr, Ho, Nd, Yb, Er, La, Gd and Lu, and wherein fluorine is present stoichiometrically in said phosphor in a larger atom % than bromine taken alone or bromine combined with chlorine and/or iodine.