Multifunctional Coating for Compact Ionizing Radiation Detection
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Solution Overview
Problem
Existing radiation detector arrangements are not flexible and have complex configurations, limiting their versatility and compactness in operation.
Innovation Solution
A detector arrangement featuring a multifunctional coating with diffuse reflective and wavelength shifting properties, which converts ionizing radiation into visible light signals that can be reflected and detected, allowing for the distinction between different types of radiation interactions based on pulse shape and time structure, and is capable of being coated directly onto the detector walls or substrates like PTFE.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional radiation detector arrangements are used, then detection functionality is provided, but the configuration becomes complicated and flexibility is reduced
Solution Approach 1:
The patent applies a multifunctional coating that combines wavelength shifting and diffuse reflective properties in a single layer. This coating can be coated directly onto detector walls or substrates like PTFE, eliminating the need for separate wavelength shifting layers and reflective layers. The coating enables the detector to handle multiple radiation types (thermal neutrons, fast neutrons, gamma rays) with a unified structure, thereby improving operational flexibility while reducing configuration complexity.
2Measurement precision
If multiple separate components are used for wavelength shifting and light reflection, then detection precision is improved, but device compactness is reduced
Solution Approach 1:
The patent merges the wavelength shifting function and the diffuse reflective function into a single multifunctional coating layer. This coating contains wavelength shifting particles that convert UV light to visible light, while simultaneously providing diffuse reflection to redirect light toward the photodetector. By combining these functions in one layer rather than using separate components, the detector achieves improved light collection efficiency while maintaining a more compact structure.
3Adaptability or versatility
If conventional detector configurations are used, then basic detection is achieved, but versatility across different radiation types is limited
Solution Approach 1:
The multifunctional coating is designed to detect multiple radiation types including thermal neutrons, fast neutrons, and gamma rays through pulse shape discrimination. The coating's composition and properties are optimized to respond to different radiation interactions, allowing a single detector configuration to handle diverse radiation types without requiring multiple specialized detector arrangements.
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 solution enables more compact, versatile, and efficient detection of ionizing radiation, including thermal neutrons, fast neutrons, and gamma rays, with improved light collection and discrimination capabilities, allowing for robust and flexible radiation detection systems.
Implementation Method 1
The coating contains wavelength shifting particles, such as for example TPB (terphenyl-b), which convert UV light into visible light
Implementation Method 2
Said multifunctional coating has reflective properties, such that visible light can be transported by means of diffuse reflection until impinging on the sensitive area of a light sensing device
Implementation Method 3
light sensing device 14, such as a photomultiplier tube or a solid state light detector... impinging on the sensitive area of a light sensing device
Implementation Method 4
Said multifunctional coating 12 is in contact with a scintillator volume 13... convert ionizing radiation into visible light signals
Data Source
Figure 1~2
Figure 3a~3b
Figure 4a)~4d)
AI summary
A detector arrangement (10) for the detection of ionizing radiation comprises at least one light sensing device (14) and a multifunctional coating (12) arranged in an interacting relation to said at least one light sensing device (14), whereby said multifunctional coating ( 12) is configured to perform the functions of a) reflecting light of a given wavelength; and b) converting at least part of thermal and/or epi-thermal neutrons entering said multifunctional coating (12) into light (15).