My Store
Sodium-doped Cesium Iodide Scintillator Crystal
Sodium-doped Cesium Iodide Scintillator Crystal
Couldn't load pickup availability
CsI(Na) (Sodium-doped Cesium Iodide) is a fast, high-efficiency scintillator crystal optimized for gamma-ray spectroscopy and low-energy radiation detection. Sodium activation enhances light output while preserving faster decay time compared with CsI(Tl), making CsI(Na) suitable for moderate count-rate and timing-sensitive measurements.
CsI(Na) emits primarily in the blue region (~420 nm), offering good compatibility with photomultiplier tubes (PMTs) and selected silicon-based detectors. With its high effective atomic number and density, CsI(Na) provides strong absorption efficiency for X-rays and gamma rays, enabling reliable energy discrimination in laboratory and field instruments.
Compared with NaI(Tl), CsI(Na) delivers better mechanical robustness and reduced hygroscopicity, while maintaining good scintillation efficiency. These properties make CsI(Na) a practical choice for research detectors, nuclear instrumentation, and compact radiation monitoring systems.
Typical Applications
- Gamma-ray spectroscopy
- Nuclear and particle physics detectors
- Radiation monitoring instruments
- University and national-lab research systems
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 |
Frequently Asked Questions
What is CsI(Na)?
How does CsI(Na) differ from CsI(Tl)?
What photodetectors are compatible with CsI(Na)?
Is CsI(Na) hygroscopic?
What are common applications of CsI(Na)?
Share
