1, diffraction pattern analysis: through material analysis.
First of all, when analyzing the xrd pattern, you can xrd the material, and then analyze one of its diffraction patterns, and you can get a composition problem. The code, molecular structure and morphology inside the material can also be analyzed by the diffraction pattern of xrd pattern.
2. Electron density analysis: density intensity and angle analysis.
Electron density analysis needs to measure the intensity and angle of diffracted beam. By generating three-dimensional images of electron density and electron density in the body, the average position of atoms in the crystal can be determined, so as to find chemical bonds and other useful information.
3. Peak analysis: peak AB peak analysis.
For peak analysis, the content of xrd pattern is needed. When the peak A is much larger than the peak B, a peak corresponding to the derivative diagram of the standard powder can be determined by the height ratio A/C between the two peaks, so that the curve of the relationship between the quality of the temperature substance and the temperature under program control can be obtained by analysis.
4. Regional analysis: analyze the size and content of the region.
Through the area of xrd pattern, we can see the related crystal content. The larger the area, the more crystal content. In the xrd pattern, the higher the relative background intensity, the higher the crystal content, which is the same analysis method as the region indicating the crystal content.
XRD spectral properties:
1, small size/light weight (the world's first truly portable XRD), suitable for field work.
2. Low energy consumption (more efficient) and no need for cooling system.
3. The low-power X-ray source has a longer service life (10 year).
4. The patented vibrating sample chamber has simple sample preparation, and the sample particle size (50mg) and powder particle size < < 150um required by Terra can be easily obtained by grinding machine and sample sieve.
5. There are no moving parts, which improves the reliability and reduces the maintenance requirements without calibration.
6.CCD detector can detect X-ray fluorescence at the same time.
7. Sensitive energy analysis: photons that cannot be used for X-ray diffraction can be distinguished. X-ray fluorescence measurement element analysis range (Ca-U), for a given mineral phase, the lower limit of analysis and detection is lower.
8. The test time is short.
9. The image resolution is high.
10, reliable wireless transmission.
1 1, which has strong environmental adaptability and can adapt to the harsh climate environment of Mars.
Reference to the above content: Baidu Encyclopedia -XRD-Terra