Chemistry Forum

The chemical formula is Gd2O2S:Tb meaning certain amount of impurity is added to Gd2O2S. So how can I determine the amount of percentage by weight of each element in the inorganic scintillator compound?

Dear All, please can anyone tell or work out the elemental composition and percentage by weight of Gd2O2S: Tb (Terbium doped gadolinium oxysulfide) for me. Many thanks