LYSO Crystals

LYSO is a Cerium doped Lutetium-based scintillation that offers high light yield, high density, short decay time and high energy resolution. This material is useful for applications such as nuclear and high energy physics, Time-of-Flight measurements, and Positron Emission Tomography (PET).

Shanghai Kingwin Optics also can provide LYSO Array with different reflector.

Properties:

Properties	Value	Unit
Density	7.15-7.35	g/cm3
Melting point(K)	2050	℃
Effective atomic number	60
Hardness(Mho)	5.8	Mohs
Refractive index	1.82
Decay Constant(ns)	34-42ns	ns
Emission wavelength max(nm)	420	nm
Anti-radiation	＞10⁶	rad
Anti-radiation	1.10	cm
Light yield(Photons/Mev)	≥32000	Photon/Mev
Energy res.(@511 Kev)	8%
After Glow	<0.1%@6ms
Hygroscopic	None

Main Advantages:

High Density

Advantage: LYSO crystals have a high density (7.1-7.35 g/cm³).

Benefit: This provides excellent stopping power for high-energy photons, making them ideal for applications such as PET (Positron Emission Tomography) scanning and high-energy physics experiments where efficient photon detection is crucial.

Fast Decay Time

Advantage: LYSO crystals have a fast decay time (34-45 ns).

Benefit: The rapid response allows for time-sensitive measurements, improving the temporal resolution in imaging applications. This is particularly beneficial in medical imaging techniques such as PET, where fast timing is essential for accurate image reconstruction.

High Light Yield

Advantage: LYSO crystals have a high light yield (approximately 32,000 photons/MeV).

Benefit: A higher light yield results in stronger signals and better signal-to-noise ratios. This enhances image clarity and resolution, which is critical for detailed and accurate imaging in medical diagnostics and industrial scanning.

Radiation Hardness

Advantage: LYSO crystals exhibit good radiation hardness.

Benefit: They maintain their performance even under high radiation doses, ensuring long-term stability and reliability. This makes them suitable for environments with high radiation exposure, such as in nuclear medicine and high-energy physics experiments.

Robust Mechanical Properties

Advantage: LYSO crystals are mechanically robust.

Benefit: Their durability allows for easy handling and integration into various devices without significant risk of damage, ensuring consistent performance over time.

Effective Detection Efficiency

Advantage: The combination of high density, fast decay time, and high light yield contributes to the effective detection efficiency.

Benefit: This ensures that even weak or low-intensity signals can be accurately detected, improving the overall sensitivity of the detection system.

Applications:

Medical Imaging

Positron Emission Tomography (PET)

Purpose: PET scanners use LYSO crystals to detect gamma rays emitted during positron-electron annihilation.

Benefit: The high density, fast decay time, and high light yield of LYSO crystals improve image resolution and timing accuracy, leading to better diagnostic capabilities.

Computed Tomography (CT)

Purpose: LYSO crystals are used in CT detectors to convert X-ray photons into visible light, which is then detected by photodetectors.

Benefit: Their high stopping power and light yield enhance image clarity and resolution, contributing to more accurate medical diagnoses.

High-Energy Physics

Particle Detectors

Purpose: LYSO crystals are used in calorimeters and other particle detectors to identify and measure high-energy particles.

Benefit: Their high density and radiation hardness make them suitable for detecting and measuring the energy of particles in high-energy physics experiments, providing precise data for research.

Industrial Scanning

Nondestructive Testing (NDT)

Purpose: LYSO crystals are utilized in industrial scanning systems for inspecting materials and structures without causing damage.

Benefit: The high sensitivity and resolution of LYSO crystals enable detailed and accurate inspections, improving quality control and safety in manufacturing and construction.

Security Scanning

Purpose: Used in security scanners at airports and other facilities to detect contraband and ensure safety.

Benefit: The high detection efficiency and resolution of LYSO crystals enhance the ability to identify hidden objects and threats.

Nuclear Medicine

Gamma Cameras

Purpose: Gamma cameras equipped with LYSO crystals are used to image gamma radiation from radioactive tracers in the body.

Benefit: The high light yield and fast response time improve image quality and diagnostic accuracy in nuclear medicine.

Environmental Monitoring

Radiation Detection

Purpose: LYSO crystals are used in detectors for monitoring environmental radiation levels.

Benefit: Their high sensitivity and robustness make them suitable for continuous monitoring in various environments, ensuring safety and compliance with regulatory standards.