Lecture15-XRD-ManualMethods

# Lecture15-XRD-ManualMethods - EMSE 312 – Diffraction...

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Unformatted text preview: EMSE 312 – Diffraction Principles Lecture 15 Powder X-ray Diffraction (XRD) Techniques Manual Methods EMSE 312 DIFFRACTION PRINCIPLES EMSE 312 – Diffraction Principles Midterm Exam • Average: 86.0 SD: 8.7 – Problem 1: Crystallography – Basics – Problem 2: Crystallography – Point Groups and Crystal Systems – Problem 3: Crystallography – Point Groups and Glide Symmetry – Problem 4: Optical Diffraction – Diffractograms – Problem 5: Properties of X-rays – X-ray Generation and Detection – Problem 6: Properties of X-rays – Absorption and Filtering – Problem 7: Mass Absorption and Linear Absorption Coefficients – Problem 8: Diffraction – Laue Techniques • Solutions Posted EMSE 312 – Diffraction Principles roblem 1 EMSE 312 – Diffraction Principles EMSE 312 – Diffraction Principles EMSE 312 – Diffraction Principles EMSE 312 – Diffraction Principles EMSE 312 – Diffraction Principles 1/6a 1/4a a 3a 4a 6a ≈ 3.6a EMSE 312 – Diffraction Principles EMSE 312 – Diffraction Principles EMSE 312 – Diffraction Principles Incoming-ray Beam h k (000) (200) (020) ( ) 830 1 830 4.1 Å g − ⎡ ⎤ = ⎣ ⎦ 830 830 1/ 0.244 Å d g = = ⎡ ⎤ ⎣ ⎦ 830 g EMSE 312 – Diffraction Principles Incoming-ray Beam h k (000) (200) (020) 1 830 2.15 Å k − ⎡ ⎤ = ⎣ ⎦ 830 830 1/ 0.465 Å k λ = = ⎡ ⎤ ⎣ ⎦ k G ' k G ( ) 830 EMSE 312 – Diffraction Principles Incoming-ray Beam h k (000) (200) (020) 2 150 θ = θ 75 θ = ( ) 830 k G ' k G 2 θ θ EMSE 312 – Diffraction Principles...
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Lecture15-XRD-ManualMethods - EMSE 312 – Diffraction...

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