Stimulable Phosphor

摘要

A novel stimulable phosphor having a high sensitivity to a semiconductor laser as a stimulating light is disclosed, and is represented by the formula:{(MIIX12-2uX22u)1-x-y(MIX11-vX2v)x(MIIIX13-3wX23w)y}1-aAa:bEu2+where MII represents at least one divalent metal such as Ba, Be, Mg or Ca; MI represents at least one monovalent metal such as Li, Na, K, Rb or Cs; MII represents at least one divalent metal such as Ba, Be, Mg or Ca; MIII represents at least one trivalent metal such as Sc, La, Y, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Al, Ga, In or Tl; X1 represents Br or Cl; X2 represents at least one halogen atom that is different from X1; A represents at least one metal oxide such as BeO, MgO, CaO, SrO, BaO, Al2O3, Y2O3, La2O3, In2O3, Ga2O3, SiO2, TiO2, ZrO2, GeO2, SnO2, Nb2O5, Ta2O5 and ThO2; and wherein 0