Single Crystal Kratky Collimator Assembly for SAXS
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Solution Overview
Problem
Traditional Kratky collimation assemblies face challenges in achieving long-term stability and reducing parasitic scattering, which affects the quality of Small Angle X-ray Scattering (SAXS) measurements, due to material stress and surface contamination, requiring tedious annealing and frequent maintenance.
Innovation Solution
The use of single crystal materials for the Kratky blocks, which are stress-free and produce much less parasitic scattering, combined with a design that aligns the blocks' surfaces within a common plane and integrates a pre-fixed beamstop for improved alignment and reduced maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional steel alloy materials are used for Kratky blocks, then the blocks can be manufactured with standard processes, but the material produces significant parasitic scattering and requires tedious annealing and aging to achieve stability
Solution Approach 1:
The patent changes the material parameter from traditional steel alloy to single crystal material (such as single crystal silicon or germanium). This fundamental material parameter change eliminates internal stress and dramatically reduces parasitic scattering by three orders of magnitude, while maintaining manufacturability through standard single crystal growth and machining processes
Solution Approach 2:
The patent employs single crystal material as a composite solution that combines the benefits of stress-free properties with low parasitic scattering characteristics. The single crystal structure provides both mechanical stability and optimal X-ray interaction properties, replacing the need for separate annealing and scattering mitigation measures
2Reliability
If traditional steel alloy materials are used for Kratky blocks, then the blocks can be manufactured, but the material requires tedious annealing and aging to achieve long-term stability
Solution Approach 1:
The patent changes the material parameter from traditional steel alloy to single crystal material (such as single crystal silicon or germanium). This fundamental material parameter change eliminates internal stress and dramatically reduces parasitic scattering by three orders of magnitude, while maintaining manufacturability through standard single crystal growth and machining processes
Solution Approach 2:
The patent adopts single crystal materials that inherently possess stress-free properties and long-term stability without requiring prolonged annealing or aging treatments. The material's intrinsic properties eliminate the need for time-consuming stabilization processes, reducing both time investment and operational complexity
3Object-generated harmful factors
If the Kratky blocks are aligned within a common plane with precise surface finishing, then parasitic scattering from surface contamination is reduced, but the alignment and surface preparation process becomes more complex
Solution Approach 1:
The patent integrates the beamstop as an inseparable component of the Kratky block assembly, forming a unified structure. This merging eliminates the need for separate alignment procedures between the beamstop and Kratky blocks, as they move together as a single unit, thereby reducing operational complexity while maintaining precise geometric relationships
Solution Approach 2:
The patent changes the material parameter from traditional steel alloy to single crystal material (such as single crystal silicon or germanium). This fundamental material parameter change eliminates internal stress and dramatically reduces parasitic scattering by three orders of magnitude, while maintaining manufacturability through standard single crystal growth and machining processes
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 solution significantly reduces parasitic scattering by three orders of magnitude, enhances long-term stability, and simplifies maintenance, allowing for consistent system performance and easier adjustment of resolution requirements.
Implementation Method 1
X-rays interact with the Kratky blocks at the corners of each block and produce parasitic scattering. Interaction between x-rays and the single crystal material also yield much less parasitic scattering.
Implementation Method 2
Single crystal is a stress free material. Using a single crystal material will essentially eliminate the stress related stability problem.
Data Source
Figure 1
Figure 2~3
AI summary
An assembly for Kratky collimator is provided. The assembly may be used for a small angle x-ray camera or system requiring such filtering. The assembly may include a first block with a first working surface and a second block with a second working surface. The first and second blocks may be aligned with the first working surface pointing an opposite direction of the second working surface and the first working surface being aligned in a common plane with the second working surface. In some implementations, the first block may comprise a crystal material. In some implementations, an extension may of the first block may be configured position a beamstop.