Radiation Detection Glass Composition for Weather Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional glass for radiation detection faces challenges in achieving both high fluorescence detection sensitivity and weather resistance, particularly in high-temperature and high-humidity environments, where poor weather resistance can lead to inaccurate measurements and glass degradation.
Innovation Solution
The glass composition is optimized with specific ranges of SiO2, B2O3, P2O5, Al2O3, Na2O, and Ag2O, along with optional MgO and ZnO, to enhance both fluorescence detection sensitivity and weather resistance, with a molar ratio of P2O5 to (SiO2+B2O3+Al2O3) greater than or equal to 1.5, ensuring improved mechanical strength and vitrification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If aluminum orthophosphate is used as a raw material to improve weather resistance, then weather resistance is improved, but fluorescence detection sensitivity becomes insufficient
Solution Approach 1:
The patent applies parameter changes by precisely controlling the compositional ratios of multiple oxides in the glass. Specifically, it sets SiO2+B2O3 at 0.1-30 mol%, P2O5 at 40-70 mol%, Al2O3 at 10-30 mol%, and Ag2O at 0.01-2 mol%, with the critical parameter P2O5/(SiO2+B2O3+Al2O3) ≥ 1.5. This systematic parameter optimization resolves the contradiction by finding the optimal balance point where both weather resistance and fluorescence detection sensitivity are maximized simultaneously.
Solution Approach 2:
The patent creates a composite glass material combining multiple oxide components with specific functions: SiO2 and B2O3 for weather resistance, P2O5 for fluorescence sensitivity, Al2O3 for structural stability, and Ag2O for radiation detection. By compositeing these materials in precise proportions rather than using a single component, the patent achieves both high weather resistance and high fluorescence detection sensitivity, resolving the technical contradiction.
2Measurement precision
If Ag2O is increased to improve fluorescence detection sensitivity, then fluorescence detection sensitivity is improved, but weather resistance deteriorates
Solution Approach 1:
The patent applies parameter changes by optimizing the Ag2O content within a specific range (0.01-2 mol%) rather than simply increasing it. Simultaneously, it adjusts the supporting matrix composition (SiO2, B2O3, P2O5, Al2O3) and maintains the critical ratio P2O5/(SiO2+B2O3+Al2O3) ≥ 1.5. This balanced parameter optimization ensures that Ag2O provides sufficient fluorescence detection sensitivity while the other components maintain weather resistance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This composition allows for a glass that maintains high fluorescence detection sensitivity while providing superior weather resistance, enabling accurate and long-term radiation dose measurement with repeated reuse.
Implementation Method 1
When the glass of this type is irradiated with radiation, positive holes and electrons are generated in the glass and are captured by Ag+ ions in the glass, which are then transformed into Ag2+ and Ag0. As a result of the Ag2+ and Ag0 in the glass being excited by ultraviolet light having a wavelength of 300 to 400 nm, fluorescence is generated (hereinafter, radiophotoluminescence (RPL)).
Data Source
AI summary
Provided is a glass for radiation detection having high fluorescence detection sensitivity and high weather resistance. A glass for radiation detection, comprising, in mol %, 0.1 to 30% of SiO2+B2O3, 0 to 20% of SiO2, 0 to 10% of B2O3, 40 to 70% of P2O5, 10 to 30% of Al2O3, 10 to 30% of Na2O, and 0.01 to 2% of Ag2O.