Lect23_notes

The wulff net the stereographic projection what is

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Unformatted text preview: ereographic Projection! The Wulff Net! The Stereographic Projection! What is our mechanism for displaying 3D crystallographic information in 2D?! CBEMS 164 – XRD, SEM & Microanalysis: Lecture 23 ! 7 CBEMS 164 – XRD, SEM & Microanalysis: Lecture 23 ! 8 The Stereographic Projection! Cubic Crystal! Standard Projections of Crystals: Cubic System! Cubic 111 Projection! Cubic 100 Projection! CBEMS 164 – XRD, SEM & Microanalysis: Lecture 23 ! 9 CBEMS 164 – XRD, SEM & Microanalysis: Lecture 23 ! 10 Symmetry Axes of Cube! ! ! ! ! Symmetry – Example for Orthorhombic Crystal! ! ! ! ! CBEMS 164 – XRD, SEM & Microanalysis: Lecture 23 ! 11 CBEMS 164 – XRD, SEM & Microanalysis: Lecture 23 ! 12 Consider an Atom in the Sample! •  High energy electron impinges on an atom •  Inner shell electron ejected –  Becomes SE electron –  (Also outer shell electrons) •  Outer shell electron drops down into vacated electron position –  Energy is released as an x-ray photon or Auger electron Generati...
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This note was uploaded on 01/16/2014 for the course CBEMS 164 taught by Professor Porter,j during the Fall '08 term at UC Irvine.

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