Storage Phosphor Paint Radiation Detection on Non-Planar Surfaces
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Solution Overview
Problem
Conventional radiation detector systems require complex equipment, power sources, and fast relaxation times, limiting their ability to detect ionizing and non-ionizing radiation sources effectively, especially on non-planar surfaces and at room temperature.
Innovation Solution
The use of storage phosphor paints integrated with electroluminescent paint and a MiniMAX™ camera system, which allows for the detection of radiation on non-planar surfaces without the need for electrical power and with slower relaxation times, using a flash scan technique and photostimulated luminescence to image radiation exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional radiation detector systems are used, then detection capability is achieved, but device complexity and power source requirements increase
Solution Approach 1:
The patent extracts the detection function from complex electronic systems and concentrates it into storage phosphor particles embedded in paint. The phosphors store radiation information chemically, eliminating the need for complex electronics, power sources, and cooling systems while maintaining detection capability.
Solution Approach 2:
The patent uses photostimulated luminescence to create an optical copy of the radiation exposure pattern. When illuminated with laser light, the storage phosphors emit light that reproduces the radiation distribution, allowing detection through simple optical imaging rather than complex electronic readout systems.
2Speed
If fast relaxation time phosphors are used, then real-time detection is enabled, but cost and system complexity increase
Solution Approach 1:
The storage phosphors perform preliminary action by storing radiation information in metastable states during exposure. This allows the detector to accumulate radiation data over time without requiring fast relaxation, and the information can be read out later when needed, enabling both real-time and post-exposure detection capabilities.
3Area of stationary object
If storage phosphor paint is used on non-planar surfaces, then detection coverage is improved, but manufacturing precision becomes more difficult
Solution Approach 1:
The patent uses paint as a flexible thin film medium to coat detector surfaces. The paint formulation allows application on complex, non-planar geometries including curved and irregular surfaces, eliminating the need for rigid planar detector components and enabling coverage of arbitrary surface shapes.
4Ease of operation
If room-temperature operation is achieved, then ease of operation is improved, but detection sensitivity may worsen
Solution Approach 1:
The patent selects storage phosphor materials with appropriate bandgap energies and metastable state characteristics that maintain high detection sensitivity at room temperature. By carefully choosing phosphor composition and illumination parameters, the system achieves both operational simplicity and detection reliability without requiring cryogenic cooling.
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
Enables the creation of low-cost, room-temperature, large-area radiation detectors that can detect ionizing and non-ionizing radiation sources on arbitrary shapes and sizes, with improved scan rates and the ability to use previously unsuitable chemical formulations, providing robust and efficient radiation imaging.
Implementation Method 1
storage phosphors that can be read out after the exposure, rather than during the exposure
Implementation Method 2
using a flash scan technique and photostimulated luminescence to image radiation exposure
Implementation Method 3
storage phosphor paints integrated with electroluminescent paint
Data Source
AI summary
A camera is used in conjunction with storage phosphor paint, configured to examine a surface. The surface is coated with storage phosphor paint in some embodiments. The camera is configured to image the surface coated with the storage phosphor paint, eliminating requirement of fast relaxation times associated with conventional scanners.