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Eu₂:Caf2 Crystal

POC-OC-122498-Eu2:CaF2 Crystal

  • High density and excellent scintillation properties.
  • Short decay constant for high-speed radiation detection.
  • Superior emission peak at 435 nm, ideal for radiation monitoring.
  • High mechanical stability with a Mohs hardness of 4.
  • OEM customization options for specialized applications.

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

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General Description

Europium-doped Calcium Fluoride (Eu₂:CaF₂) is a high-performance scintillation crystal widely used in radiation detection and medical diagnostic devices. The crystal’s cubic structure, combined with its high density (3.18 g/cm³) and short decay constant (940 ns), enables rapid and efficient detection of radiation, making it ideal for nuclear physics experiments, reactor monitoring, and advanced imaging systems. Its emission peak at 435 nm ensures compatibility with various optical systems.

Eu₂:CaF₂ crystals exhibit excellent optical clarity and uniformity, enhancing their performance in precision applications. Their durability, combined with low refractive index (1.47), ensures longevity and stable operation in demanding environments.

General Application and Examples

Eu₂:CaF₂ crystals find applications in:

  • Nuclear Physics: Ideal for high-energy particle detection due to their rapid decay and high-density properties.
  • Radiation Monitoring: Used in nuclear reactors for detecting radiation levels with precision.
  • Medical Imaging: Advanced scintillation properties enable use in diagnostic devices for detecting radioactive isotopes.
  • Spectroscopy: Compatible with spectroscopic systems for precision measurement.
  • Scientific Research: Utilized in low-energy experiments and high-resolution detection systems.

For instance, in radiation monitoring, Eu₂:Caf2 Crystal  enables real-time detection due to its short decay time. Its emission at 435 nm is tailored for optical systems used in radiation detectors.

Chemical and Structural Properties

Attribute Value
Density 3.18 g/cm³
Melting Point 1360 °C
Refractive Index 1.47
Emission Peak 435 nm
Decay Constant 940 ns
Mohs Hardness 4
Crystal Structure Cubic System
Cleavage Plane (111)

Optical Properties

Optical Property Value
Light Output 8.6%
Radiation Length 17 mm
Transparency Range UV to visible light
Optical Density Tunable

Standard Fabrication Specifications

Specification Value
Surface Flatness < λ/8 @ 632.8 nm
Parallelism < 20 arcseconds
Perpendicularity 90° ± 15 arcminutes
Surface Quality 10-5 Scratch-Dig
Maximum Dimensions Customizable (varies)

Spectrum Transmission Curve

The emission spectrum demonstrates a sharp peak at 435 nm, aligning with radiation detection devices. Data for the exact curve can be provided upon request.

Coating Specification

Custom anti-reflective (AR) coatings are available upon request, designed to enhance transmission at 435 nm and improve detection efficiency.

  • 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.
Dimension (mm)CoatingPrice (USD)
10 x 10 x 1AR@435 nm250
15 x 15 x 2AR@435 nm350
20 x 20 x 2AR@435 nm500
CustomUpon requestQuote available

POC-OC-122498-Eu₂ Caf2 Crystal

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