| Abstract: |   A stabilized scintillator includes a compound corresponding to formula
     (2) or (3), or activated derivatives thereof:
     A.sub.2BB'.sub.xB''.sub.yX.sub.6  (2) A.sub.2BB'X.sub.xX'.sub.y  (3)
     wherein A and B are monovalent cations, B' is a trivalent cation, X is a
     halogen, x and y are molar percentages, x+y=1; B'' is an aliovalent
     exchange cation that has a different valence than B', X' is an aliovalent
     exchange anion that has a different valence than X. A method of preparing
     the stabilized scintillator is also disclosed. |