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Detailed diffraction imaging of x-ray optics crystals with synchrotron radiation

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/5.0040584· OSTI ID:1813041
 [1];  [2];  [2];  [2];  [3]
  1. Ecopulse, Inc., Springfield, VA (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  3. National Research Centre, Moscow (Russian Federation). Kurchatov Institute

Rocking curve topography at the Advanced Photon Source’s beamline 1-BM measures the x-ray reflection from large (many cm2) flat crystals on a sub-mm scale with microradian angular resolution. The $$(01\bar{1}1)$$ reflection at 8 keV is uniform across the crystal and close to theory for three thick quartz wafers well-polished with increasingly finer grit. However, the reflection is non-uniform for some ~ 0.1mmthin, bendable crystals that are made flat by optical contact with a flat substrate. Here, these thin crystals are bent to serve in certain x-ray diagnostics of plasmas, and similar non-uniformities could then occur in bent crystals as well. The same detail in x-ray reflection in bent crystals is unachievable with the existing topography setup: one way to get the desired resolution is with a standard microfocusing approach.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1813041
Alternate ID(s):
OSTI ID: 1785584
Journal Information:
Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 6 Vol. 92; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (13)

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conference January 2016
Sequential x-ray diffraction topography at 1-BM x-ray optics testing beamline at the advanced photon source
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conference January 2016
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Small Bragg-plane slope errors revealed in synthetic diamond crystals journal October 2020
Status of XOP: an x-ray optics software toolkit conference October 2004

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