Key Features
- High luminescence efficiency and exceptional radiation detection capabilities across a range of scintillation crystals.
- Customizable properties, including size, coatings, and dimensions, to meet diverse application requirements.
- Comprehensive product portfolio with broad spectral emission coverage and fast decay times for precise measurements.
- Exceptional transparency and optical clarity for enhanced photon detection and signal processing.
- Tailored solutions for nuclear medicine, high-energy physics, environmental monitoring, and more.
General Description
POC specializes in the processing and customization of scintillation crystals, including Tl:NaI, Tl:CsI, Ce:LaBr₃, CeF₃, PbWO₄, and more. These crystals are integral to radiation detection systems due to their high light yield, fast response times, and broad spectral compatibility. They are widely used in industries such as nuclear medicine, homeland security, and high-energy physics. Each material boasts distinct properties, including strong luminescence efficiency, optimized emission wavelengths, and resistance to environmental stressors.
General Application and Examples
- Tl:NaI Crystals: Used in gamma spectrometers, nuclear medicine, and environmental monitoring systems.
- Tl:CsI Crystals: Preferred for gamma-ray detection in oil well logging and high-energy physics.
- Ce:LaBr₃ and Ce:LaCl₃: Critical in homeland security applications and medical imaging due to their low background noise and high resolution.
- PbWO₄: Ideal for high-energy physics and calorimetry applications in particle detectors.
- BGO Crystals: Utilized in positron emission tomography (PET) scanners and space-based radiation monitoring.
- Eu₂:CaF₂: Suited for spectroscopy and X-ray detection due to its stability under radiation.
Comparison of Crystals
| Property | Tl:NaI | Tl:CsI | Ce:LaBr₃ | CeF₃ | PbWO₄ | BGO |
|---|---|---|---|---|---|---|
| Density (g/cm³) | 3.67 | 4.53 | 5.08 | 6.16 | 8.28 | 7.13 |
| Emission Peak (nm) | 415 | 550 | 380 | 315 | 480 | 480 |
| Decay Time (ns) | 250 | 1000 | 16 | 25 | 10 | 300 |
| Hygroscopic | Yes | Yes | No | No | No | No |
| Crystal System | Cubic | Cubic | Hexagonal | Cubic | Tetragonal | Cubic |
Standard Fabrication Specifications
| Specification | Value |
|---|---|
| Face Dimension Tolerance | ±0.1 mm |
| Thickness Tolerance | ±0.2 mm |
| Surface Flatness | λ/8 @ 632.8 nm |
| Parallelism | <30 arcseconds |
| Clear Aperture | >85% |
| Surface Quality | 20-10 Scratch/Dig |