Zinc Selenide (Te) - ZnSe(Te) scintillation crystals
Zinc Selenide (Te) - ZnSe(Te) scintillation crystals have an emission maximum at 640 nm and, as such, are well matched for use with silicon photodiodes. Two variants are available - ‘Fast’ ZnSe(Te), (decay time of 3-5 µs) and ‘Slow’ ZnSe(Te) (decay time of 30-50 µs).

ZnSe(Te) scintillator crystal strengths:
  • Reasonably good stopping power with a density of 5.42g/cm³
  • Stable characteristics up to 400ºC
  • Virtually free of ‘afterglow’
  • Radiation hard up to 10⁷ Rad
  • Mechanically robust characteristics, no cleavage planes and are non-hygroscopic.

ZnSe(Te) scintillator crystals, issues to be noted:
  • Poor transparency - limits usable thicknesses

Zinc Selenide (Te) - ZnSe(Te) scintillator crystals are useful in diverse applications such as:
  • Medical - Tomography and Instruments
  • Industrial - NDT
  • Security
  • Specialist applications in high energy, nuclear, space and medical physics
ZnSe(Te) Scintillation Crystals
- Properties -
ZnSe(Te) Scintillator Emission Spectrum
ZnSe(Te) Mass Attenuation Coefficients
ZnSe(Te) Scintillation Crystals
- Optical Properties -
Property Units Value
Wavelength (Max. Emission) nm 640
Wavelength Range nm 525 - 750
Decay Times ns 20
Light Yield photons/keV 40
Photoelectron Yield % of NaI(Tl)
Afterglow % <0.05 @ 6ms
Radiation Length cm TBA
Optical Transmission µm TBA
Transmittance % TBA
Refractive Index TBA
Reflection Loss/Surface % TBA
Neutron Capture Cross-section barns TBA
ZnSe(Te) Scintillation Crystals
- Mechanical Properties -
Property Units Value
Chemical Formula ZnSe(Te)
Density g/cm³ 5.42
Atomic Number (Effective) TBA
Melting Point ºC 1779
Thermal Expansion Coeff. C⁻¹ TBA x 10‾⁶
Crystal Structure Cubic
Hardness Mho TBA
Hygroscopic No
Solubility g/100gH₂0 N/A
ZnSe(Te) Scintillation Crystals
- Further Reading/Publications -
ZnSe(Te) Scintillation Crystals
- Sizes -
Diameters:
40mm max.
Lengths:
40 mm max.