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Title: Implications of gnomonic distortion on electron backscatter diffraction and transmission Kikuchi diffraction

Abstract

The effect of gnomonic distortion on orientation indexing of electron backscatter diffraction patterns is explored through simulation of electron diffraction patterns for sample-to-detector geometries associated with transmission Kikuchi diffraction (TKD) and electron backscatter diffraction (EBSD). Simulated data were analysed by computing a similarity index for both Hough transformed data and simulated patterns to determine the sensitivity of each method for detecting subtle differences in the effect of gnomonic distortions on electron diffraction patterns. These results indicate that the increased gnomonic distortions in electron diffraction patterns for a TKD geometry enhance the sensitivity for detecting subtle differences in interband angles. Additionally, the utilisation of a Hough transform-based indexing approach further enhances the sensitivity.

Authors:
ORCiD logo [1];  [2];  [2];  [3]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. North Carolina State Univ., Raleigh, NC (United States)
  3. Carnegie Mellon Univ., Pittsburgh, PA (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
OSTI Identifier:
1838997
Grant/Contract Number:  
AC05-00OR22725; IIP-1361571; IIP-1361503; DGE-0946818
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Microscopy
Additional Journal Information:
Journal Volume: 285; Journal Issue: 2; Journal ID: ISSN 0022-2720
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; EBSD; gnomonic distortions; TKD

Citation Formats

Fancher, Chris M., Burch, Matthew J., Patala, Srikanth, and Dickey, Elizabeth C. Implications of gnomonic distortion on electron backscatter diffraction and transmission Kikuchi diffraction. United States: N. p., 2022. Web. doi:10.1111/jmi.13077.
Fancher, Chris M., Burch, Matthew J., Patala, Srikanth, & Dickey, Elizabeth C. Implications of gnomonic distortion on electron backscatter diffraction and transmission Kikuchi diffraction. United States. https://doi.org/10.1111/jmi.13077
Fancher, Chris M., Burch, Matthew J., Patala, Srikanth, and Dickey, Elizabeth C. Tue . "Implications of gnomonic distortion on electron backscatter diffraction and transmission Kikuchi diffraction". United States. https://doi.org/10.1111/jmi.13077. https://www.osti.gov/servlets/purl/1838997.
@article{osti_1838997,
title = {Implications of gnomonic distortion on electron backscatter diffraction and transmission Kikuchi diffraction},
author = {Fancher, Chris M. and Burch, Matthew J. and Patala, Srikanth and Dickey, Elizabeth C.},
abstractNote = {The effect of gnomonic distortion on orientation indexing of electron backscatter diffraction patterns is explored through simulation of electron diffraction patterns for sample-to-detector geometries associated with transmission Kikuchi diffraction (TKD) and electron backscatter diffraction (EBSD). Simulated data were analysed by computing a similarity index for both Hough transformed data and simulated patterns to determine the sensitivity of each method for detecting subtle differences in the effect of gnomonic distortions on electron diffraction patterns. These results indicate that the increased gnomonic distortions in electron diffraction patterns for a TKD geometry enhance the sensitivity for detecting subtle differences in interband angles. Additionally, the utilisation of a Hough transform-based indexing approach further enhances the sensitivity.},
doi = {10.1111/jmi.13077},
journal = {Journal of Microscopy},
number = 2,
volume = 285,
place = {United States},
year = {Tue Jan 04 00:00:00 EST 2022},
month = {Tue Jan 04 00:00:00 EST 2022}
}

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