The anisotropy in the optical constants of quartz crystals for soft X-rays

The refractive index of a y-cut SiO(2) crystal surface is reconstructed from orientation-dependent soft X-ray reflectometry measurements in the energy range from 45 to 620 eV. Owing to the anisotropy of the crystal structure in the (100) and (001) directions, a significant deviation of the measured...

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Autores principales: Andrle, A., Hönicke, P., Vinson, J., Quintanilha, R., Saadeh, Q., Heidenreich, S., Scholze, F., Soltwisch, V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2021
Materias:
Research Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8056758/
https://www.ncbi.nlm.nih.gov/pubmed/33953651
http://dx.doi.org/10.1107/S1600576720016325
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author Andrle, A.
Hönicke, P.
Vinson, J.
Quintanilha, R.
Saadeh, Q.
Heidenreich, S.
Scholze, F.
Soltwisch, V.
author_facet Andrle, A.
Hönicke, P.
Vinson, J.
Quintanilha, R.
Saadeh, Q.
Heidenreich, S.
Scholze, F.
Soltwisch, V.
author_sort Andrle, A.
collection PubMed
description The refractive index of a y-cut SiO(2) crystal surface is reconstructed from orientation-dependent soft X-ray reflectometry measurements in the energy range from 45 to 620 eV. Owing to the anisotropy of the crystal structure in the (100) and (001) directions, a significant deviation of the measured reflectance at the Si L (2,3) and O K absorption edges is observed. The anisotropy in the optical constants reconstructed from these data is also confirmed by ab initio Bethe–Salpeter equation calculations for the O K edge. This new experimental data set expands the existing literature data for quartz crystal optical constants significantly, particularly in the near-edge regions.
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spelling pubmed-80567582021-05-04 The anisotropy in the optical constants of quartz crystals for soft X-rays Andrle, A. Hönicke, P. Vinson, J. Quintanilha, R. Saadeh, Q. Heidenreich, S. Scholze, F. Soltwisch, V. J Appl Crystallogr Research Papers The refractive index of a y-cut SiO(2) crystal surface is reconstructed from orientation-dependent soft X-ray reflectometry measurements in the energy range from 45 to 620 eV. Owing to the anisotropy of the crystal structure in the (100) and (001) directions, a significant deviation of the measured reflectance at the Si L (2,3) and O K absorption edges is observed. The anisotropy in the optical constants reconstructed from these data is also confirmed by ab initio Bethe–Salpeter equation calculations for the O K edge. This new experimental data set expands the existing literature data for quartz crystal optical constants significantly, particularly in the near-edge regions. International Union of Crystallography 2021-02-19 /pmc/articles/PMC8056758/ /pubmed/33953651 http://dx.doi.org/10.1107/S1600576720016325 Text en © A. Andrle et al. 2021 https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Research Papers
Andrle, A.
Hönicke, P.
Vinson, J.
Quintanilha, R.
Saadeh, Q.
Heidenreich, S.
Scholze, F.
Soltwisch, V.
The anisotropy in the optical constants of quartz crystals for soft X-rays
title The anisotropy in the optical constants of quartz crystals for soft X-rays
title_full The anisotropy in the optical constants of quartz crystals for soft X-rays
title_fullStr The anisotropy in the optical constants of quartz crystals for soft X-rays
title_full_unstemmed The anisotropy in the optical constants of quartz crystals for soft X-rays
title_short The anisotropy in the optical constants of quartz crystals for soft X-rays
title_sort anisotropy in the optical constants of quartz crystals for soft x-rays
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8056758/
https://www.ncbi.nlm.nih.gov/pubmed/33953651
http://dx.doi.org/10.1107/S1600576720016325
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