Tseeriumiga dopeeritud kvartstorude mitmed rakendusvaldkonnad

UV-filter quartz tubes are designed to effectively block harmful ultraviolet radiation to the human body while maintaining maximum visible light transmission. They are widely used in the production of various environmentally friendly electro-optical products.

Cerium-doped (Ce) quartz tubes are specialty materials made by introducing cerium ions (Ce³⁺/Ce⁴⁺) into high-purity fused silica. These tubes possess a unique ability to absorb harmful UV radiation while maintaining high visible light transmittance. They are commonly used in medical equipment, external light sources, and other eco-friendly lighting systems. Among all UV-filter quartz products, cerium-doped quartz tubes are the most widely used in applications involving human exposure to light sources.

Key Application Areas:

1. High-Energy Radiation Detection

• Scintillator Materials: Cerium ions emit fluorescence (in the UV or visible range) when excited by high-energy radiation such as X-rays or gamma rays. This property is utilized in nuclear medicine (e.g., PET scanners), high-energy physics experiments (e.g., particle detectors), and industrial non-destructive testing.
• Advantages: Fast response time (in the nanosecond range) and high radiation resistance, ideal for intense radiation environments.

2. Ultraviolet Filtration

• UV Absorption: Ce³⁺ ions strongly absorb UV radiation, particularly UVC and UVB. This makes cerium-doped quartz suitable for manufacturing UV filter windows and protective optics, especially in semiconductor photolithography to prevent stray UV interference.

3. Laser and Optical Devices

• Tunable Laser Medium: Cerium-doped quartz can serve as a gain medium in certain solid-state lasers, particularly those operating in the UV or near-UV range.
• Fluorescence Conversion: Used in LEDs or fluorescent systems to convert UV light into specific visible wavelengths.

4. Radiation-Resistant Optical Components

• Aerospace and Nuclear Applications: Cerium-doped quartz tubes are used as viewing windows or optical sensors in satellites and nuclear reactors due to their superior radiation resistance compared to regular quartz glass.

5. Scientific Research and Specialty Lighting

• Synchrotron Facilities: Applied in beamline optics where high-energy radiation is present, minimizing fluorescent interference.
• UV Lamps: Used in germicidal or specialty lighting systems where cerium doping helps modulate the UV output spectrum.

Critical Properties Supporting These Applications

• Radiation Stability: Cerium doping reduces color center formation under radiation, extending the product’s service life.
• Optical Transparency: Maintains quartz’s wide spectral transmission range (from deep UV to near-infrared) while adding beneficial fluorescence properties.

Example Product Specifications: Cerium-Doped Quartz Tubes from TotalQuartzWorks

• SiO₂ Purity: 99.5%
• Cerium Doping Content: 0.3%
• OH Content: ≤50 ppm
• Thermal Expansion Coefficient: 6.7 × 10⁻⁷ cm/cm·°C
• Softening Point: 1680°C
• Annealing Point: 1210°C
• Strain Point: 1150°C
• UV Transmission Characteristics:
  The product efficiently blocks UVC wavelengths (100–280 nm). In particular, Ce³⁺ has significant absorption in the 200–280 nm range—known for causing DNA damage and harmful biological effects. Nearly complete UVC filtration makes these tubes highly suitable for medical and sterilization equipment where protection from radiation exposure is critical.

Important Considerations

• Doping Precision: Cerium concentration must be strictly controlled. Excess doping may cause undesirable scattering or background fluorescence.
• Application Design: Selection should balance transmittance, fluorescence efficiency, and mechanical strength for optimal performance.