Back reflectionsWSi261大Front refections
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The Bragg-Brentano diffractometere-2epowderdiffractometerDetector20AnalysercrystalX-ray sourceFilters2SampleholderDivergenceslitReceiving slitThe Bragg-Brentano :2 geometry is the most commonly used.Theincident beam hits the sample in angle and reflected at the same angleHence the detector is placed at 2 from the incident beam.The detectorrotates at twice angular speed than the sample
The Bragg-Brentano diffractometer The Bragg-Brentano :2 geometry is the most commonly used. The incident beam hits the sample in angle and reflected at the same angle. Hence the detector is placed at 2 from the incident beam. The detector rotates at twice angular speed than the sample
Bragg-Brentano衍射几何设计原理：R1=R2=R，试样转8角，探测器转2e角（2e/偶合），或试样不动，光管转e，探测器转e（e/偶合）TubeDetectorRIR2020聚焦圆Sample测量圆要求：聚焦圆随衍射角大小而变化，衍射角越大、聚焦圆半径越小，当29=0，聚焦圆半径r=80：当20=1800时，聚焦圆r=R/2，且r=R/2sin。4
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Focusing circles forvarious geometriesG2so00SourceaeonDetectorG1Randompowdermount(planesdi,d2,d3..)Goniometerciicle5
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