(1) BaF2 (Barium Fluoride) (2) BGO (Bi4Ge3O12) (3) CaF2 (Calcium Fluoride) (4) CsI (Cesium Iodide) (5) CsI(Na) (6) CsI(Tl) (7) NaI (8) NaI(Tl) (9) PbWO4