Description of Lead Tungstate Crystal Substrates
Lead tungstate crystal substrates exhibit a density of 8.28 g/cm3, a radiation length of 0.92 cm, a high radiation tolerance, a low decay constant and are available at a moderate price. They are employed for radiation detection.
The PbWO4 crystal exhibits rapid luminescence, a density of 8.28 g/cm3 and withstands high irradiation levels. The PbWO4 single crystal is frequently utilised in instruments for detecting high-energy physics events and has a broad range of applications in nuclear medicine. Owing to its satisfactory optical performance and stable physical and chemical characteristics, the lead tungstate crystal substrate is also used as a material for photovoltaic crystal applications.

Specifications for Lead Tungstate Crystal Substrates
Substrate
|
PbWO4 Substrate
|
Crystal Structure
|
Tetragonal System
|
Lattice Constant
|
a = b = 50416Å ; c = 12.049Å
|
Melting Point
|
1123 °C
|
Density
|
8.28 g/cm3
|
Mohs Hardness
|
/
|
Refractive Index
|
2.16
|
Radiation Length (cm)
|
0.92
|
Attenuation Constant (ns)
|
6ns/30ns
|
Peak Wavelength (nm)
|
440/530
|
Light Output Rate (%NaI(Tl))
|
0.5
|
Hygroscopicity
|
None
|
Standard Size
|
20 x 20 x 0.5 mm, 10 x 10 x 0.5 mm, 5 x 5 x 0.5 mm
|
Polishing
|
Precisely ground and single-side or double-side polished
Surface Roughness (Ra) < 5Å
|
Applications of Lead Tungstate Crystal Substrates
Lead tungstate crystal substrates are used in:
- Photovoltaic crystal material
- Nuclear medicine
- Instruments for detecting high-energy physics events