Neutron Detection Array Using Uranium Reactive Layer
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Solution Overview
Problem
Conventional methods for detecting neutron radiation are cumbersome, expensive, and often sensitive to gamma radiation, lacking a small form, rapid detection system.
Innovation Solution
A radiation detection system featuring an array of radiation detection devices with a radiation reactive material, such as uranium, disposed in proximity to the detectors. This system utilizes the interaction between neutron radiation and the radiation reactive material to detect radiation events, with the charge storage regions in the detectors switching between '0' and '1' states based on the radiation interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional radiation detection equipment is used, then radiation detection capability is achieved, but the equipment becomes bulky and expensive
Solution Approach 1:
The patent combines multiple functions into a single integrated device: the radiation reactive material, charge storage region, and detection circuitry are merged into one compact structure. This integration eliminates the need for separate bulky components while maintaining full radiation detection capability.
Solution Approach 2:
The invention changes the detection parameters by using charge storage regions that can be rapidly read and reset, enabling fast detection rates. The use of semiconductor-based charge storage instead of traditional large-scale equipment represents a fundamental parameter change in detection methodology.
2Reliability
If conventional neutron radiation detection methods are used, then detection is achieved, but sensitivity to gamma radiation interferes with accuracy
Solution Approach 1:
The patent applies local quality by making the detection device selectively responsive to neutron radiation through the specific interaction between neutrons and the radiation reactive material. The charge storage region is configured to respond primarily to neutron-induced events while being relatively insensitive to gamma radiation, creating localized sensitivity characteristics.
3Speed
If rapid detection is implemented, then detection speed improves, but detection sensitivity may be compromised
Solution Approach 1:
The patent implements preliminary action by pre-charging the charge storage regions to a known state before detection. This allows rapid readout and reset cycles without compromising the ability to detect radiation events, as the storage regions are already prepared to capture and hold charge signals.
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 system provides a compact, rapid, and sensitive means of detecting neutron radiation, reducing the need for bulky equipment and minimizing interference from gamma radiation, thus enhancing detection efficiency and cost-effectiveness.
Implementation Method 1
When neutron radiation interacts with the radiation reactive material, the radiation reactive material releases charged particles that influence charge in a charge storage region
Data Source
AI summary
A radiation detection array including a substrate, a dielectric layer disposed over the substrate, the dielectric layer including a radiation reactive material, a semiconductor layer disposed over the dielectric layer, a set of source/drain rows formed in the semiconductor layer, a charge storage structure disposed over the semiconductor layer, and a set of gate stacks formed over the charge storage.