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Cesium Iodide (CsI) — Material Introduction & Comparison (Pure, Tl-Doped, Na-Doped)
Cesium Iodide (CsI) — Material Introduction & Comparison (Pure, Tl-Doped, Na-Doped)
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Cesium Iodide (CsI) is a high-performance inorganic scintillator widely used in radiation detection, medical imaging, particle physics, and optical systems. As a heavy alkali-halide crystal, CsI provides excellent stopping power for X-rays and gamma rays while offering a high light yield and broad emission spectrum. Its versatility makes it compatible with a range of photodetectors, including PMTs, photodiodes, CCDs, and silicon-based sensors.
Below is a clear comparison of the properties of pure CsI, CsI:Tl, and CsI:Na:
Comparison of CsI, CsI:Tl, and CsI:Na
| Property | CsI:Tl | CsI:Na | Pure CsI |
|---|---|---|---|
| Light Yield (photons/keV) | ~56 | ~40 | <10 |
| Decay Time | ~1 µs | ~630 ns | <10 ns |
| Emission Peak | ~550 nm | ~420 nm | 310 nm (fast), 420–600 nm (slow) |
| Best Detector Compatibility | Photodiodes / CCDs | PMTs | Fast PMTs / UV detectors |
| Efficiency at Room Temperature | Excellent | Good | Low |
| Hygroscopic | Yes | Yes | Yes |
Contact for Ordering
For quotes, customization, or technical support, please email:
support@design-realized.com
We can provide custom sizes, optical polishing, coatings, encapsulation, and dopant concentrations based on your application needs. more crystals visit https://design-realized.com/pages/material.
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