X-ray Diffraction Gap Adjustment Mechanism
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Solution Overview
Problem
Conventional X-ray diffraction apparatuses face challenges in adjusting the gap between the sample and the X-ray shielding member to accommodate varying incident X-ray widths during changes in incident angle, leading to either obstruction of the incident X-ray or passage of scattered X-rays, which affects measurement precision.
Innovation Solution
An X-ray diffraction apparatus with a gap adjusting unit that moves the X-ray shielding member in accordance with changes in the incident angle using a goniometer, adjusting the gap width to match the incident X-ray width, ensuring both incident X-rays are allowed to pass while scattering is minimized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the gap between the sample and X-ray shielding member is kept fixed, then the structure is simple, but the incident X-ray may be obstructed or scattered X-rays may pass through when incident angle changes
Solution Approach 1:
The patent applies the dynamics principle by making the gap between the sample and X-ray shielding member adjustable rather than fixed. The gap adjusting mechanism allows the shielding member to move vertically, dynamically changing the gap width to match the varying incident X-ray beam width during不同角度 measurements, thereby preventing both obstruction of incident X-rays and passage of scattered X-rays
2Reliability
If the gap is made adjustable to match incident X-ray width, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The gap adjusting mechanism implements dynamics by enabling vertical movement of the shielding member to dynamically match the incident X-ray beam width at different angles, improving measurement precision
Solution Approach 2:
The system employs self-service through automatic coordination between the goniometer angle changes and the gap adjusting mechanism. As the goniometer rotates the sample and detector to different angles, the gap adjusting mechanism automatically adjusts the shielding member position to maintain appropriate gap width, reducing the need for manual intervention
3Ease of operation
If a fixed shielding member is used, then the device is simple to operate, but scattered X-rays cannot be effectively blocked at all angles
Solution Approach 1:
The shielding member is made dynamically adjustable vertically to match the incident X-ray beam width at different angles. This dynamic adjustment ensures that scattered X-rays are effectively blocked at all measurement angles while maintaining ease of operation through automated coordination with the goniometer
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 effectively prevents scattered X-rays from reaching the detector, maintaining measurement precision by dynamically adjusting the gap between the X-ray shielding member and the sample to match the changing incident X-ray width during X-ray diffraction measurements.
Implementation Method 1
an X-ray shielding member is provided so as to confront the sample... preventing scattered X-rays from traveling to the X-ray detector
Implementation Method 2
positional relationship corresponding to relative angular relationship of the X-ray source, the X-ray incident face of the sample held on the sample table and the X-ray detector is changed by a goniometer to change an incident angle of the X-ray to the sample
Implementation Method 3
a diffraction X-ray diffracted from the sample is detected by an X-ray detector
Implementation Method 4
Diffraction of the X-ray occurs in the sample and thus a diffraction X-ray occurs from the sample when a Bragg' s diffraction condition is satisfied between the X-ray irradiated to the sample and crystal lattice planes of the sample
Data Source
AI summary
An X-ray shielding member is provided so as to confront an X-ray incident face of a sample, and a gap through which an X-ray emitted from an X-ray source is passed and irradiated to an X-ray incident face of the sample is formed between the X-ray shielding member and the X-ray incident face of the sample. A gap adjusting mechanism for moving the X-ray shielding member is further provided to move the X-ray shielding member in accordance with change of an X-ray incident angle to the sample by a goniometer, whereby the breadth of the gap formed between the X-ray shielding member and the X-ray incident face of the sample can be adjusted.