Many-Beam Dynamical Simulation of Electron Backscatter Diffraction Patterns

Aimo Winkelmann, Carol Trager-Cowan, Francis Sweeney, Austin P. Day, Peter Parbrook

Research output: Contribution to journalArticle

122 Citations (Scopus)

Abstract

We present an approach for the simulation of complete electron backscatter diffraction (EBSD) patterns where the relative intensity distributions in the patterns are accurately reproduced. The Bloch wave theory is applied to describe the electron diffraction process. For the simulation of experimental patterns with a large field of view, a large number of reflecting planes has to be taken into account. This is made possible by the Bethe perturbation of weak reflections. Very good agreement is obtained for simulated and experimental patterns of gallium nitride GaNf0001g at 20 kV electron energy. Experimental features like zone-axis fine structure and higher-order Laue zone rings are accurately reproduced. We discuss the influence of the diffraction of the incident beam in our experiment.
Original languageEnglish
Pages (from-to)414-421
Number of pages7
JournalUltramicroscopy
Volume107
Issue number2007
DOIs
Publication statusPublished - 2007

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Electron diffraction
Diffraction patterns
diffraction patterns
Nitrides
electrons
simulation
Diffraction
field of view
nitrides
Electrons
electron diffraction
fine structure
electron energy
perturbation
Experiments
rings
diffraction

Keywords

  • electron backscatter diffraction
  • nanoscience
  • wave theory

Cite this

Winkelmann, Aimo ; Trager-Cowan, Carol ; Sweeney, Francis ; Day, Austin P. ; Parbrook, Peter. / Many-Beam Dynamical Simulation of Electron Backscatter Diffraction Patterns. In: Ultramicroscopy. 2007 ; Vol. 107, No. 2007. pp. 414-421.
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Many-Beam Dynamical Simulation of Electron Backscatter Diffraction Patterns. / Winkelmann, Aimo; Trager-Cowan, Carol; Sweeney, Francis; Day, Austin P.; Parbrook, Peter.

In: Ultramicroscopy, Vol. 107, No. 2007, 2007, p. 414-421.

Research output: Contribution to journalArticle

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T1 - Many-Beam Dynamical Simulation of Electron Backscatter Diffraction Patterns

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AU - Sweeney, Francis

AU - Day, Austin P.

AU - Parbrook, Peter

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AB - We present an approach for the simulation of complete electron backscatter diffraction (EBSD) patterns where the relative intensity distributions in the patterns are accurately reproduced. The Bloch wave theory is applied to describe the electron diffraction process. For the simulation of experimental patterns with a large field of view, a large number of reflecting planes has to be taken into account. This is made possible by the Bethe perturbation of weak reflections. Very good agreement is obtained for simulated and experimental patterns of gallium nitride GaNf0001g at 20 kV electron energy. Experimental features like zone-axis fine structure and higher-order Laue zone rings are accurately reproduced. We discuss the influence of the diffraction of the incident beam in our experiment.

KW - electron backscatter diffraction

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