Combined XRD and XRF Detection Using Scanning Wavelength Selector
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Solution Overview
Problem
Current X-ray diffraction (XRD) and X-ray fluorescence (XRF) analysis techniques require separate instruments, leading to increased complexity, cost, and space requirements, as they have different technical requirements and cannot be easily combined into a single apparatus without compromising performance.
Innovation Solution
A method and apparatus that utilize a single combined detection arrangement capable of performing both XRD and XRF analysis, employing a polychromatic X-ray source and a scanning wavelength selector to switch between XRD and XRF modes, allowing for cost and space savings by sharing components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate instruments are used for XRD and XRF analysis, then each technique can be optimized for its specific requirements, but device complexity and cost increase
Solution Approach 1:
The patent implements a single X-ray source and detection arrangement that can perform both XRD and XRF analyses by switching between operational modes. The system uses a polychromatic X-ray source that can operate in fluorescence mode for XRF and diffraction mode for XRD, eliminating the need for separate instruments while maintaining optimized performance for both techniques
Solution Approach 2:
The system dynamically switches between XRD and XRF operational modes by adjusting the X-ray source characteristics and detection parameters. The polychromatic source can be configured to emit appropriate spectra for each mode, and the detection arrangement can be optimized accordingly, allowing one instrument to adapt to different analytical requirements
2Reliability
If separate instruments are used for XRD and XRF analysis, then each technique can be optimized, but cost increases
Solution Approach 1:
The patent implements a single X-ray source and detection arrangement that can perform both XRD and XRF analyses by switching between operational modes. The system uses a polychromatic X-ray source that can operate in fluorescence mode for XRF and diffraction mode for XRD, eliminating the need for separate instruments while maintaining optimized performance for both techniques
3Reliability
If separate instruments are used for XRD and XRF analysis, then each technique can be optimized, but space requirements increase
Solution Approach 1:
The patent implements a single X-ray source and detection arrangement that can perform both XRD and XRF analyses by switching between operational modes. The system uses a polychromatic X-ray source that can operate in fluorescence mode for XRF and diffraction mode for XRD, eliminating the need for separate instruments while maintaining optimized performance for both techniques
4Device complexity
If a single combined detection arrangement is used for XRD and XRF, then device complexity and cost are reduced, but measurement precision may be compromised
Solution Approach 1:
The system dynamically switches between XRD and XRF operational modes by adjusting the X-ray source characteristics and detection parameters. The polychromatic source can be configured to emit appropriate spectra for each mode, and the detection arrangement can be optimized accordingly, allowing one instrument to adapt to different analytical requirements
Solution Approach 2:
The patent changes operational parameters such as X-ray source spectrum, detection mode, and geometric configuration to optimize performance for each analysis type. By adjusting these parameters, the system maintains high measurement precision while using a single combined detection arrangement
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 simultaneous XRD and XRF analysis with a single instrument, reducing complexity and cost while maintaining high performance, by using a single X-ray source and detection arrangement, thus providing a compact and efficient analytical tool for both structural and elemental composition analysis.
Implementation Method 1
In the XRF technique, a sample is irradiated with an X-Ray beam which induces the emission of secondary X-rays having wavelengths characteristic of the constituents elements of the material
Implementation Method 2
Detection of the diffracted X-rays over a range of angles provides an angular diffraction pattern or diffractogram having characteristic peaks of diffracted intensity when the condition of Bragg's law is satisfied
Data Source
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AI summary
The invention provides a method of performing X-ray diffraction (XRD) and/or X-ray fluorescence (XRF) analysis of a sample, comprising: irradiating a sample with X-rays from an X-ray source; providing a combined XRD and XRF detection arrangement comprising a scanning wavelength selector and at least one X-ray detector for detecting X-rays selected by the wavelength selector; and performing XRD analysis of the sample by selecting at least one fixed wavelength of X-rays diffracted by the sample using the scanning wavelength selector and detecting X-rays of the selected fixed wavelength(s) at one or more values of the diffraction angle f at the sample using the X-ray detector(s); and/or performing XRF analysis of the sample by scanning wavelengths of X-rays emitted by the sample using the scanning wavelength selector and detecting X-rays of the scanned wavelengths using the X-ray detector(s). Also provided is an apparatus for performing both X-ray diffraction (XRD) and X-ray fluorescence (XRF) analysis of a sample comprising a combined XRD and XRF detection arrangement comprising a scanning wavelength selector and at least one X-ray detector for detecting X-rays selected by the wavelength selector.