PbWO4
Introduction:
Lead tungstate (PbWO4) is a new scintillating crystal discovered in 1990's. As one of the most dense oxide crystal (8.28g/cm3), PbWO4 is distinguished by its short radiation length (0.9 cm), small
Moliere radius (2.19 cm) and strong irradiation hardness. Its scintillation light output peaks between 450-550 nm with a fast component decay time in the range from 2-20 ns. After irradiation with
gamma-ray, the degradation in the optical transmittance is not large up to 106 rad. It is considered as a promising scintillation material for electromagnetic spectrometer in high energy, physics
experiment as well as medicine.
Properties:
Density (g/cm3) | 8.28 |
Melting Point(℃) | 1123 |
Radiation length(cm) | 0.92 |
Decay constant(ns) | 6/30 |
Peak emission (nm) | 440/530 |
Light yield(%NaI:Tl) | 0.5 |
Hardness(Mohs) | / |
Refractive Index | 2.16 |
Hygroscopicity | None |
Cleavage | 101 |