Industry-Standard NaI(Tl) Scintillators: Proven Efficiency & Value
Sodium Iodide doped with Thallium (NaI:Tl) remains the gold standard in inorganic scintillation materials, offering an unbeatable combination of superior luminous efficiency and exceptional cost-effectiveness. Emitting precisely at 415nm, its light output is perfectly matched to the sensitivity of standard bialkali photomultiplier tubes (PMTs), ensuring reliable, high-resolution detection for both X-ray and gamma-ray applications with highly stable temperature performance.
Because NaI(Tl) is highly hygroscopic, expert manufacturing is critical. ATR Crystal delivers a comprehensive suite of custom solutions, including precision-sealed encapsulated NaI(Tl) scintillators, robust high-temperature NaI(Tl) variants, and fully integrated scintillation detectors. Whether you require precision for nuclear medicine and environmental monitoring, or rugged durability for aerial surveying and deep-well logging, our versatile NaI(Tl) components deliver proven, continuous performance.
ATR Crystal NaI(Tl) Scintillators
Description
Parameter
Description
Application of NaI(Tl) Scintillators (NaI:Tl Scintillators)
Nuclear medicine
Environmental monitoring
Nuclear physics
Aerial surveying
Well logging
Advantages of NaI(Tl) Scintillators (NaI:Tl Scintillators)
Good energy resolution
High light output
Emission spectrum well matched with the sensitivity curve of photomultiplier tubes (PMTs) with bialkali photocathodes
High luminous efficiency
Less affected by temperature
The Ability of ATR Crystal
Maximum Size: 160mm x 200mm x 500mm
Available items: encapsulated scintillator, high temperature encapsulated scintillator, scintillation detector
Different encapsulation designs: general cylindrical NaI(Tl) scintillator, rectangular NaI(Tl) scintillator, end-well type NaI(Tl) scintillator, side-well type NaI(Tl) scintillator, thin disk type NaI(Tl) scintillator (for low-energy and X-ray detection) and so on.
Typical size: 1″ diameter x 1″ thick, 2″ diameter x 2″ thick, 3″ diameter x 3″ thick, 5″ diameter X 5″ thick, 2″x4″x16″, 4″x4″x16
Different encapsulation material options: metal shell(Aluminum, Stainless steel, Titanium alloy), optical output window(K9 glass window, Quartz window, Sapphire window), radiation entrance window(Beryllium entrance window, Aluminum entrance window).
High-Temperature NaI(Tl) Scintillators
For oil logging applications, NaI(TI) scintillator works underground, it must withstand high temperatures above 150℃, certain
shock, and vibration. The high-temperature NaI(TI) scintillators are encapsulated from high-temperature forged NaI(Tl) polycrystals
and special high-temperature resistant materials through reliable encapsulation technology. The working temperature range is
from -30℃to 175℃. It has excellent mechanical shock resistance, temperature shock resistance, and a long lifetime. The drilling
NaI(Tl) scintillator can work at 175°C and 30g strong vibration.
| Encapsulation | Sapphire output window + Titanium alloy shell + Hot-forged polycrystals | Sintering output window + Stainless steel shell + Hot-forged polycrystals | ||
|---|---|---|---|---|
| Energy resolution (For 137Cs) (%) | PHR(25℃): ≤12 | PHR(25℃): ≤15 | PHR(25℃): ≤12 | PHR(25℃): ≤15 |
| PHR(175℃): ≤16 | PHR(175℃): ≤20 | PHR(175℃): ≤16 | PHR(175℃): ≤20 | |
Parameter
Properties of NaI(Tl) Scintillators
| Light yield (photoelectron /MeV) | 38000 |
|---|---|
| Scintillation Decay Time (ns) | 250 |
| Emission Peak Wavelength (nm) | 415 |
| Refractive Index (peak wavelength) | 1.85 |
| Density（g/cm3） | 3.67 |
| Hygroscopic | Yes |
| Mohs hardness | 2 |
| Afterglow | 0.3~5%@6ms |
| Radiation length (cm) | 2.59 |
| Cleavage plane | <100> |
| Coefficient of thermal expansion (℃^-1) | 4.74×10^-5 |
| Molecular weight | 149.9 |
| Melting point (℃) | 651 |