Projects per year
Abstract
Transmission Kikuchi diffraction (TKD) has been gaining momentum as a high resolution alternative to electron back-scattered diffraction (EBSD), adding to the existing electron diffraction modalities in the scanning electron microscope (SEM). The image simulation of any of these measurement techniques requires an energy dependent diffraction model for which, in turn, knowledge of electron energies and diffraction distances distributions is required. We identify the sample-detector geometry and the effect of inelastic events on the diffracting electron beam as the important factors to be considered when predicting these distributions. However, tractable models taking into account inelastic scattering explicitly are lacking. In this study, we expand the Monte Carlo (MC) energy-weighting dynamical simulations models used for EBSD [1] and ECP [2] to the TKD case. We show that the foil thickness in TKD can be used as a means of energy filtering and compare band sharpness in the different modalities. The current model is shown to correctly predict TKD patterns and, through the dictionary indexing approach, to produce higher quality indexed TKD maps than conventional Hough transform approach, especially close to grain boundaries.
Original language | English |
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Pages (from-to) | 98-106 |
Number of pages | 9 |
Journal | Ultramicroscopy |
Volume | 187 |
Early online date | 2 Feb 2018 |
DOIs | |
Publication status | Published - 30 Apr 2018 |
Keywords
- Transmission Kikuchi diffraction
- TKD
- electron back-scattered diffraction
- EBSD
- scanning electron microscopes
- SEM
- electrons
- foil thickness
- energy filtering
- dynamical simulations
- Monte Carlo
Fingerprint
Dive into the research topics of 'Energy-weighted dynamical scattering simulations of electron diffraction modalites in the scanning electron microscope'. Together they form a unique fingerprint.Projects
- 1 Finished
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Industrial Case Account 2014 | Pascal, Elena
Trager-Cowan, C. (Principal Investigator), Hourahine, B. (Co-investigator) & Pascal, E. (Research Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/10/14 → 31/10/19
Project: Research Studentship - Internally Allocated
Datasets
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Electron microscopy distribution plots
Pascal, E. (Creator), University of Strathclyde, 22 Jan 2018
DOI: 10.15129/a9bdc861-d2b0-4740-9d1e-656b3adf0fee, https://github.com/elena-pascal/TKDpaperPlots
Dataset
Prizes
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Young researcher SUPA exchange travel funding
Pascal, E. (Recipient), Oct 2016
Prize: Other distinction
Activities
- 1 Visiting an external academic institution
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Carnagie Mellon University
Pascal, E. (Visiting researcher)
12 Jan 2017 → 15 Feb 2017Activity: Visiting an external institution types › Visiting an external academic institution