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Title: Dynamical scattering in coherent hard x-ray nanobeam Bragg diffraction

Unique intensity features arising from dynamical diffraction arise in coherent x-ray nanobeam diffraction patterns of crystals having thicknesses larger than the x-ray extinction depth or exhibiting combinations of nanoscale and mesoscale features. We demonstrate that dynamical scattering effects can be accurately predicted using an optical model combined with the Darwin theory of dynamical x-ray diffraction. The model includes the highly divergent coherent x-ray nanobeams produced by Fresnel zone plate focusing optics and accounts for primary extinction, multiple scattering, and absorption. Furthermore, the simulation accurately reproduces the dynamical scattering features of experimental diffraction patterns acquired from a GaAs/AlGaAs epitaxial heterostructure on a GaAs (001) substrate.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [1]
  1. Univ. of Wisconsin, Madison, WI (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357; FG02-04ER46147
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 23; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1481739
Alternate Identifier(s):
OSTI ID: 1441105

Pateras, A., Park, J., Ahn, Y., Tilka, J. A., Holt, M. V., Kim, H., Mawst, L. J., and Evans, P. G.. Dynamical scattering in coherent hard x-ray nanobeam Bragg diffraction. United States: N. p., Web. doi:10.1103/PhysRevB.97.235414.
Pateras, A., Park, J., Ahn, Y., Tilka, J. A., Holt, M. V., Kim, H., Mawst, L. J., & Evans, P. G.. Dynamical scattering in coherent hard x-ray nanobeam Bragg diffraction. United States. doi:10.1103/PhysRevB.97.235414.
Pateras, A., Park, J., Ahn, Y., Tilka, J. A., Holt, M. V., Kim, H., Mawst, L. J., and Evans, P. G.. 2018. "Dynamical scattering in coherent hard x-ray nanobeam Bragg diffraction". United States. doi:10.1103/PhysRevB.97.235414.
@article{osti_1481739,
title = {Dynamical scattering in coherent hard x-ray nanobeam Bragg diffraction},
author = {Pateras, A. and Park, J. and Ahn, Y. and Tilka, J. A. and Holt, M. V. and Kim, H. and Mawst, L. J. and Evans, P. G.},
abstractNote = {Unique intensity features arising from dynamical diffraction arise in coherent x-ray nanobeam diffraction patterns of crystals having thicknesses larger than the x-ray extinction depth or exhibiting combinations of nanoscale and mesoscale features. We demonstrate that dynamical scattering effects can be accurately predicted using an optical model combined with the Darwin theory of dynamical x-ray diffraction. The model includes the highly divergent coherent x-ray nanobeams produced by Fresnel zone plate focusing optics and accounts for primary extinction, multiple scattering, and absorption. Furthermore, the simulation accurately reproduces the dynamical scattering features of experimental diffraction patterns acquired from a GaAs/AlGaAs epitaxial heterostructure on a GaAs (001) substrate.},
doi = {10.1103/PhysRevB.97.235414},
journal = {Physical Review B},
number = 23,
volume = 97,
place = {United States},
year = {2018},
month = {6}
}