Scintillator Structure Using Phosphor Perimeter Control for Light Output
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Solution Overview
Problem
The use of a mixture of GOS powder and resin in scintillators reduces manufacturing costs but also decreases luminous output, necessitating a method to enhance luminous output while maintaining cost-effectiveness.
Innovation Solution
A scintillator structure is designed with a specific phosphor particle perimeter, defined as the normalized length of the interface between the phosphor and resin, to optimize luminous output by minimizing multiple scattering at the interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a mixture of GOS powder and resin is used as the scintillator, then manufacturing cost is reduced, but luminous output of visible light is reduced
Solution Approach 1:
The invention changes the geometric parameter of phosphor particles (specifically the phosphor particle perimeter indicating normalized interface length) to optimize the resin-phosphor interface. By controlling this parameter to be within a specific range (0.5 to 2.0), the invention reduces multiple scattering at interfaces while maintaining the cost-effective powder-resin composite structure, thereby improving luminous output without increasing manufacturing cost
Solution Approach 2:
The invention uses a composite material structure consisting of phosphor particles dispersed in a resin matrix. By optimizing the interface characteristics between these two materials (through phosphor particle perimeter control), the invention achieves improved light output while maintaining the cost advantages of using resin-composite scintillators instead of pure ceramic
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
The scintillator structure achieves increased luminous output by reducing the phosphor particle perimeter, thereby improving performance without increasing costs.
Implementation Method 1
a scintillator is a substance that absorbs energy of radiation and generates visible light when irradiated with radiation represented by X-rays and gamma rays
Implementation Method 2
a scintillator structure including a scintillator and a reflecting material
Data Source
AI summary
A scintillator structure includes a scintillator and a reflecting material that covers the scintillator. Here, the scintillator includes a resin and a phosphor, and a phosphor particle perimeter indicating a normalized length of an interface between the phosphor and the resin in a cross-sectional image of the scintillator is smaller than 6.25.