Influence of Sb on the scintillation properties of lead tungstate crystal

Sb-doped lead tungstate (PWO) crystals were grown and investigated. The mea surements of Sb content in crystals indicated that the segregation coeffici ent of Sb in PWO is about 0.63. Even with a little Sb3+ introduced into PWO crystal, the transmission, especially the light yield was enhanced signifi cantly Furthermore, after the Sb-doped PWO crystals were annealed, not only the fast component still remained a high percentage but also the radiation hardness was improved evidently. The main reason may be that Sb-doping can compensate the composition deficiency and then reduce the density of hole centers such as Pb3+ and O-.