CsI(Tl) Scintillation Crystal Description:
The CsI(Tl) scintillation crystal is a type of scintillator material used for gamma‐ray detection. It produces a light yield that is four times higher than that of BGO and exhibits a radiation length that is shorter than NaI(Tl). Its mechanical and plastic properties meet standard requirements. The crystal emits light over a spectral range from 350 nm to 700 nm, which is compatible with photodiodes. It is used for detecting heavy charged particles under a high gamma background.
-scintillation-crystal.jpg)
CsI(Tl) Scintillation Crystal Advantages:
- Mechanical and plastic properties that meet standard requirements
- A light yield quantitatively four times that of BGO
- A high X-ray attenuation capability
- A density of 4.51 g/cm³
- An absorber characteristic with adequate stopping power
CsI(Tl) Scintillation Crystal Specifications:
Density (g/cm³)
|
4.51
|
Melting Point (K)
|
894
|
Coefficient of Thermal Expansion (C-1)
|
54 x 10-6
|
Cleavage Plane
|
None
|
Hardness (Mohs)
|
2
|
Hygroscopic
|
Slight
|
Maximum Emission Wavelength (nm)
|
550
|
Lower Wavelength Limit (nm)
|
320
|
Refractive Index at Emission Maximum
|
1.79
|
Primary Decay Time (ns)
|
1 000
|
Light Yield (photons/keV γ)
|
54
|
Photoelectron Yield [% of NaI(Tl)] (for γ-rays)
|
45
|
CsI(Tl) Scintillation Crystal Applications:
- Security inspections
- High-energy physics
- Detection of nuclear radiation