Glass Through-Electrode Radiation Detector for Stable Gas Amplification
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Solution Overview
Problem
Conventional radiation detection devices with pixel-type electrodes face challenges in maintaining a stable high gas amplification factor when detecting environmental radiation with high doses, due to disturbances in the electric field caused by silicon substrates becoming conductive and parasitic capacity issues from oxide layers, as well as gas deterioration from insulating resins.
Innovation Solution
The use of a glass substrate with a non-alkaline composition and a mixed gas environment of rare gases and quenching agents, along with a specific electrode configuration, stabilizes the electric field and suppresses parasitic capacity, ensuring a high gas amplification factor even under high radiation doses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a silicon substrate with oxide layer is used for detection element, then sufficient gas amplification factor can be obtained, but the electric field changes under high radiation doses and ionizing electron capture becomes unstable
Solution Approach 1:
The patent changes the material parameter of the substrate from silicon to glass, which fundamentally alters the electrical properties. Glass maintains stable insulating properties under radiation, preventing the electric field changes that occur with silicon substrates when exposed to high radiation doses, thus ensuring stable ionizing electron capture and gas amplification
Solution Approach 2:
The patent employs a composite structure combining glass substrate with specific electrode materials (aluminum, gold, or copper). This composite approach leverages the stable insulating properties of glass while incorporating highly conductive electrode materials to optimize electric field distribution and maintain stable detection performance under radiation exposure
2Ease of manufacture
If insulating resin is used in device structure, then manufacturing is simplified, but gas deterioration occurs and replacement frequency increases
Solution Approach 1:
The patent removes insulating resin from the device structure entirely, extracting the harmful element that causes gas deterioration. By eliminating the resin component, the source of gas contamination is removed, ensuring long-term gas quality stability without requiring frequent replacements
Solution Approach 2:
The patent replaces the disposable insulating resin with a permanent glass substrate that does not deteriorate. Glass provides lasting structural and insulating functionality without the short service life and degradation issues associated with insulating resins, eliminating the need for periodic maintenance
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 configuration maintains insulating properties and suppresses gas generation, allowing for stable high gas amplification and reduced gas replacement frequency, enhancing detection accuracy and device longevity.
Implementation Method 1
The use of a glass substrate with a non-alkaline composition... maintains insulating properties... suppresses parasitic capacity
Implementation Method 2
Research on radiation detection device using gas amplification with pixel-type electrodes is underway
Implementation Method 3
a mixed gas environment of rare gases and quenching agents, along with a specific electrode configuration, stabilizes the electric field
Data Source
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AI summary
A detection element is described. The detection element comprises a substrate having a first surface and a second surface opposite to the first surface, the substrate arranged with a through hole; a through electrode arranged in the through hole, wherein the through electrode is filled in the through hole; a first electrode connected to the through electrode, the first electrode arranged on the first surface; a patterned electrode connected to the through electrode, the patterned electrode arranged on the second surface; and a second electrode arranged on the first surface, the second electrode separated from the first electrode. The substrate is a glass substrate, and the through hole has an inner diameter in the thickness direction of the substrate that is smaller than an inner diameter of the first penetrating end on the first surface and an inner diameter of the second penetrating end on the second surface.