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Ce:LaBr3 Crystal

POC-OC-122499-Ce:LaBr3 Crystal

  • Exceptional energy resolution, suitable for nuclear radiation detection.
  • Light output 1.5–1.6 times higher than NaI(Tl), providing enhanced sensitivity.
  • Short decay time (17–25 ns), ensuring high temporal resolution.
  • Superior stability under varying temperatures with excellent linearity.
  • High count rate capability and high effective atomic number for robust detection.

Customizable Components Available for This Material to Meet Your Specific Needs!

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General Description

The Ce:LaBr₃ (Cerium-doped Lanthanum Bromide) crystal is a high-performance scintillation material widely used in nuclear radiation detection applications. With a light output that exceeds that of NaI(Tl) by 1.5 to 1.6 times and a rapid decay time of 17–25 nanoseconds, it delivers exceptional temporal resolution. Its excellent linearity and stability make it an ideal choice for applications where accuracy and reliability are critical. The high effective atomic number and count rate capabilities further enhance its performance, making it suitable for a broad range of nuclear and radiation detection fields.

General Applications and Examples

Ce:LaBr₃ crystals are highly versatile and find applications in:

  • Nuclear Radiation Detection: Efficiently detecting gamma rays due to high energy resolution and photon yield.
  • Medical Imaging: Utilized in PET and SPECT for superior light output and low decay constant.
  • Environmental Monitoring: For radiation monitoring in industrial and natural environments.
  • High Energy Physics: Applied in particle detection experiments requiring precise temporal resolution.
  • Homeland Security: Critical for detecting illicit radioactive materials and nuclear threats.
  • Scientific Research: Ce:LaBr3 Crystal Used in spectroscopy and other advanced research applications.

In radiation detection systems, Ce:LaBr₃ crystals are frequently integrated due to their unmatched combination of sensitivity and resolution, improving overall system performance in a variety of applications.

Chemical and Structural Properties

PropertyValue
Density5.3 g/cm³
Melting Point843 °C
Thermal Expansion8 × 10⁻⁶ °C⁻¹ (parallel to c-axis)
Refractive Index1.9
Emission Peak380 nm
Decay Constant16 ns
Light Yield63 photons/kEV
Photoelectron Yield150%–165% (relative to NaI(Tl))
Crystal StructureHexagonal
Cleavage Plane(100)

Optical Properties

Ce:LaBr₃ is characterized by:

  • High light yield, improving detector efficiency.
  • Superior photoelectron yield (150–165%) for precise photon detection.
  • Consistent light output under varying temperature conditions.
  • Sharp emission peak at 380 nm, suitable for photon-based detection systems.

Standard Fabrication Specifications

ParameterSpecification
DiameterCustomizable (per request)
ThicknessVariable (per application)
Surface Quality10–5 S/D
Flatnessλ/10 @ 632.8 nm
Parallelism≤ 10 arcmin
Clear Aperture> 90%
Protective Chamfer0.2 mm @ 45°
Operating Temperature-40 °C to +60 °C

Spectrum Transmission Curve

The emission spectrum of Ce:LaBr₃ peaks at 380 nm, enabling high detection sensitivity in gamma-ray spectrometry and nuclear applications. Specific transmission curve data can be obtained upon request or measured as part of custom specifications.

Coating Specification

Standard anti-reflection coatings are applied to enhance light transmission and reduce surface reflection. Custom coatings are available based on application requirements.

  • Adhesion Test: Compliant with MIL-C-675C military standards, an adhesion test involved applying a tape that meets LT-90 specifications onto the lens film layer. The tape was affixed fully and then removed vertically. This procedure was performed three times, resulting in no blistering or peeling.
  • Temperature Test: In line with MIL-C-675C specifications, test pieces were subjected to temperatures of -62±1℃ and 71±1℃. After maintaining them at room temperature (16℃~32℃) for two hours, the adhesion test was repeated, confirming no film detachment.
  • Abrasion Resistance Test: Conforming to MIL-C-675C and CCC-C-440 standards, the abrasion resistance test involved a gauze tester applying a minimum force of 1.0 lbs (0.45 kg) to the film. This was repeated 25 times with gauze widths of 1/4 inch (6.4mm) and 3/8 inch (9.5mm), ensuring no damage occurred to the film surface.
  • Humidity Test: Under MIL-C-675C criteria, the test piece was placed in a controlled temperature and humidity chamber set to 49 ±2℃ and 95%~100% humidity for 24 hours. The film remained intact, with no peeling, scratches, or other defects.
  • Solvent and Cleaning Testing: Following MIL-C-675C specifications, test pieces were exposed to room temperature conditions (16℃~32℃) and tested with acetone and alcohol for at least 10 minutes each. After air drying and subsequent cleaning with a cotton cloth soaked in alcohol, the film surface showed no signs of peeling or scratches.
  • Salt Spray Test: After 100 hours in a 35°C environment with a 5% saltwater concentration, the film showed no signs of damage.
SizePhotoelectron YieldCoatingPrice (USD)Customization
1 × 1 cm150%–165%Custom Coating500Available
2 × 2 cm150%–165%Custom Coating900Available
5 × 5 cm150%–165%Custom Coating2000Available

POC-OC-122499-Ce LaBr3 Crystal

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