CdWO₄ | Scintillation Crystal

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The CdWO4 (Cadmium Tungstate) is a high-density scintillation crystal engineered for precision spectrometry and low-activity radiometry. Known for its virtually non-existent afterglow and high light yield, it is the industry standard for high-resolution Computed Tomography (CT) and safety inspection systems.

Core Capabilities:

  • Low Afterglow: Minimized ghosting and noise, ideal for high-speed imaging.

  • High Light Yield: Reaches approximately 40% of NaI(Tl) for clear signal detection.

  • Superior Density: Provides excellent stopping power for Gamma and X-rays.

  • Chemical Stability: Non-hygroscopic and highly resistant to radiation damage.

SKU: SCN-CDWO Category:

Description

CdWO4 Scintillation Crystal

This material is a highly efficient scintillator that excels in the spectrometry of radionuclides. It offers a low intrinsic background and high light yield. It is the best choice for detecting low levels of ionizing radiation in the field.

Core Material Advantages

  • Exceptional Clarity: The transparent structure optimizes X-ray detection.

  • Minimal Afterglow: This material eliminates residual light and ensures clean data.

  • Radiation Hardness: Stable optical properties are maintained under intense radiation.

  • High Stopping Power: A short radiation length allows for compact detector designs.

Advanced Detection Technology

Our crystals deliver precision for medical and industrial sectors.

  • Spectrometric Precision: High light yield allows for accurate radiometry.

  • Non-Hygroscopic: The material does not absorb moisture, ensuring long-term durability.

  • Proven Performance: It is a staple for high-resolution CT and security inspection. For more information on scintillation principles, you can refer to the IEEE Nuclear & Plasma Sciences Society.

Technical Specifications

Property Value
Density $7.90\text{ g/cm}^3$
Radiation Length ($X_0$) $1.06\text{ cm}$
Light Yield $12,000\text{–}15,000\text{ photons/MeV}$
Decay Time $12\text{–}15\text{ µs}$
Peak Emission $470\text{–}540\text{ nm}$
Afterglow $< 0.005\text{%}$ at $3\text{ ms}$

Main Applications

  • Medical Imaging: Core component for high-resolution CT scanners.

  • Safety & Security: High-efficiency detection for container scanning.

  • Environmental Monitoring: Precise spectrometry for low-level contamination.

  • Nuclear Physics: General-purpose detection of high-energy photons.

Why Choose X-Z LAB?

We optimize every CdWO4 Scintillation Crystal to provide meaningful data. Our team provides crystals with superior surface finishes and strict purity controls. We use these standards to maximize your signal-to-noise ratio. You can also view our PbWO4 products to compare technical specifications.

Technical Specifications

Density

7.9 g/cm³

Melting Point

1871 K

Refractive Index

2.2–2.3

Effective Atomic Number

74

Hardness

4–4.5 Mohs

Radiation Length

1.06 cm

Hygroscopicity

No

Wavelength

475 nm

Lower Wavelength Cutoff

330 nm

Decay Time

12,000–15,000 ns

Light Output

15 photons/keV

Photoelectron Yield

~40% ∝ NaI(Tl)

Thermal Expansion Coefficient

10.2 × 10⁻⁶/°C

More Details

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