. . . . 1. To identify phases in an unknown sample by XRD which tools do you need? An electron gun and an anode material

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1 To Identify Phases In An Unknown Sample By Xrd Which Tools Do You Need An Electron Gun And An Anode Material 1 (324.68 KiB) Viewed 46 times

. . . . 1. To identify phases in an unknown sample by XRD which tools do you need? An electron gun and an anode material Continuous emission spectrum of the anode material Wavelength of the Ka emission of the anode material A monochromating optical component A rotating X-ray detector A single crystal sample Powder crystalline sample with many fine grains Observed diffraction pattern Unit cell information about possible phases A database of reference patterns Absorption spectrum of possible phases Search/match software . . . 2. During the phase identification procedure you match reference patterns with the observed one. Which of the following matches are valid (i.e. the reference material is in the analyzed material) ? Explain your reasoning. obs ابرارالب| obs obslu باااا ref Lu را برای ref ref 3. The observed and reference patterns look very similar, but the peaks seem to be shifted. What may cause this? 4. Explain in detail what microstructural information can be calculated by analyzing the broadening of peaks in the diffraction pattern.