View of an instrument Crystal Monochromator Detector X-Ray Tube
6 View of an instrument
The Bragg-Brentano Geometry Mono- Divergence slit Antiscatter- chromator slit Detector- Tube slit Sample
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Crystal Monochromator X-ray beam monochromatization can be achieved by diffraction from single crystals:Si,Ge,Licl,and graphite. 2dsin0=入 Monochromator Slit Polychromatic Divergence Beam slit Monochromatic Beam Longer wavelengths Shorter Wavelengths 8 61 02 01 Monochromator Sufficient to separate Ka and KB .Not sufficient to separate Ka and Ko
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Powder Pattern Cell +Structure Sample Instrument Unit Cell 20 + Atomic Structure 20 × Sample Instrument *20 Powder Pattern 9
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La(NiasSn1s),Cu Ko 多 20 Diffractometers 15 nsity,Y(1o 113,Ka 1.0 032.Ka1 131,Ka1 113.Ka 032.Ka 131,K 0.5 Powder Diffractometer 0.0 81 83 84 6 0 20 50 60708090100110120 Bragg angle,20(deg.) B V.K.Pecharsky and P.Y.Zavalyj Fundamentals of Powder Diffraction and Structural Characterization of Materials
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