Slit-Based X-Ray Detection for Adjustable Analysis Resolution
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Solution Overview
Problem
Conventional X-ray analysis apparatuses using parallel plate collimators are expensive, difficult to align, and offer limited flexibility in adjusting resolution, requiring reconfiguration for different analysis methods, and are sensitive to sample thickness and height.
Innovation Solution
A method using a slit and a position-sensitive X-ray detector to calculate detection angles based on the distance between the slit and the detector, allowing for adjustable resolution without the need for parallel plate collimators, enabling cost-effective and easy alignment for multiple X-ray analysis applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If parallel plate collimators are used to collimate X-rays in parallel beam geometry, then measurement precision is improved and sensitivity to sample thickness/height is reduced, but device complexity and cost increase significantly
Solution Approach 1:
The patent extracts the collimation function from the complex parallel plate collimator and implements it using a simple slit structure combined with computational methods. The slit provides basic geometric collimation while the detection angle calculation performs the additional precision function that would otherwise require the full parallel plate collimator assembly.
Solution Approach 2:
The patent replaces the mechanical parallel plate collimator system with a combination of a simple slit and computational calculation. Instead of using complex mechanical collimation components, the system uses a minimal mechanical element (slit) combined with mathematical computation of detection angles to achieve the desired measurement precision.
2Reliability
If parallel plate collimators are used, then X-ray collimation is achieved, but alignment difficulty and manufacturing cost increase
Solution Approach 1:
The patent extracts the essential collimation function from the parallel plate collimator and implements it using a simple slit structure. This minimal mechanical structure is much easier to manufacture and align while still providing the necessary X-ray collimation when combined with computational detection angle calculation.
Solution Approach 2:
The patent replaces the expensive, complex parallel plate collimator with a simple, inexpensive slit structure. The slit is a basic mechanical component that is far cheaper to manufacture and replace, and its simplicity makes alignment straightforward compared to the precision requirements of parallel plate collimators.
3Measurement precision
If parallel plate collimators are used, then X-ray beam collimation is improved, but flexibility in adjusting resolution is limited
Solution Approach 1:
The patent implements dynamic adjustability of resolution through the computational calculation of detection angles. By varying the parameters in the detection angle calculation (such as the distance L1 from the slit to the detector and the position of detection elements), the system can dynamically adjust its resolution without requiring physical reconfiguration or replacement of collimation components.
Solution Approach 2:
The patent achieves resolution adjustment by changing computational parameters rather than mechanical configurations. The detection angle calculation uses parameters such as the slit-to-detector distance L1 and detection element positions, which can be modified to adjust resolution. This allows flexible adaptation of the system to different resolution requirements without physical reconfiguration.
4Measurement precision
If Bragg-Brentano parafocusing geometry is used, then high resolution and high intensity are achieved, but sample preparation complexity and alignment precision requirements increase
Solution Approach 1:
The patent extracts the essential diffraction measurement function from the complex Bragg-Brentano system and implements it using parallel beam geometry with a slit and detection angle calculation. This approach maintains the ability to measure diffraction patterns while eliminating the need for precise sample focusing and complex sample preparation procedures.
Solution Approach 2:
The patent inverts the conventional approach by using parallel beam geometry instead of focused beam geometry. Rather than focusing X-rays to a point on the sample and detecting at a specific position, the system uses a parallel beam incident on the sample and calculates detection angles computationally, thereby simplifying sample preparation and alignment while maintaining measurement precision.
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 high-quality X-ray analysis with adjustable resolution, reducing sensitivity to sample thickness and height, and facilitating easy reconfiguration for different methods like GIXRD and XRR.
Implementation Method 1
Information can be obtained by analysing X-rays that have been scattered, reflected or diffracted from a sample
Implementation Method 2
Information can be obtained by analysing X-rays that have been scattered, reflected or diffracted from a sample
Implementation Method 3
X-ray diffraction (XRD) can be used to analyse the crystalline form and chemical composition of samples
Data Source
AI summary
The present invention relates to an X-ray analysis apparatus and an X-ray analysis method for analysing a sample. The X-ray analysis method involves using a first slit between the sample and a position sensitive X-ray detector to analyse the sample, including calculating a detection angle based on a distance L1 between the first slit and the X-ray detector, and the position of the first detection element in the array of detection elements. The X-ray analysis apparatus comprises a processor that is configured to analyse data from an X-ray detector comprising an array of detection elements. The processor is configured to receive data comprising an X-ray intensity detected at the first detection element of the array of detection elements and calculate the detection angle based on the distance L1 between the first slit and the X-ray detector, and the position of the first detection element in the array of detection elements.