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Design of a multilayer-based collimated plane-grating monochromator for tender X-ray range

Collimated plane-grating monochromators (cPGMs), consisting of a plane mirror and plane diffraction grating, are essential optics in synchrotron radiation sources for their remarkable flexibility and good optical characteristics in the soft X-ray region. However, the poor energy transport efficiency...

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Autores principales: Yang, Xiaowei, Wang, Hongchang, Hand, Matthew, Sawhney, Kawal, Kaulich, Burkhard, Kozhevnikov, Igor V., Huang, Qiushi, Wang, Zhanshan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5182023/
https://www.ncbi.nlm.nih.gov/pubmed/28009556
http://dx.doi.org/10.1107/S1600577516017884
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author Yang, Xiaowei
Wang, Hongchang
Hand, Matthew
Sawhney, Kawal
Kaulich, Burkhard
Kozhevnikov, Igor V.
Huang, Qiushi
Wang, Zhanshan
author_facet Yang, Xiaowei
Wang, Hongchang
Hand, Matthew
Sawhney, Kawal
Kaulich, Burkhard
Kozhevnikov, Igor V.
Huang, Qiushi
Wang, Zhanshan
author_sort Yang, Xiaowei
collection PubMed
description Collimated plane-grating monochromators (cPGMs), consisting of a plane mirror and plane diffraction grating, are essential optics in synchrotron radiation sources for their remarkable flexibility and good optical characteristics in the soft X-ray region. However, the poor energy transport efficiency of a conventional cPGM (single-layer-coated) degrades the source intensity and leaves reduced flux at the sample, especially for the tender X-ray range (1–4 keV) that covers a large number of K- and L-edges of medium-Z elements, and M-edges of high-Z elements. To overcome this limitation, the use of a multilayer-based cPGM is proposed, combining a multilayer-coated plane mirror with blazed multilayer gratings. With this combination, the effective efficiency of cPGMs can be increased by an order of magnitude compared with the conventional single-layer cPGMs. In addition, higher resolving power can be achieved with improved efficiency by increasing the blaze angle and working at higher diffraction order.
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spelling pubmed-51820232017-01-10 Design of a multilayer-based collimated plane-grating monochromator for tender X-ray range Yang, Xiaowei Wang, Hongchang Hand, Matthew Sawhney, Kawal Kaulich, Burkhard Kozhevnikov, Igor V. Huang, Qiushi Wang, Zhanshan J Synchrotron Radiat Research Papers Collimated plane-grating monochromators (cPGMs), consisting of a plane mirror and plane diffraction grating, are essential optics in synchrotron radiation sources for their remarkable flexibility and good optical characteristics in the soft X-ray region. However, the poor energy transport efficiency of a conventional cPGM (single-layer-coated) degrades the source intensity and leaves reduced flux at the sample, especially for the tender X-ray range (1–4 keV) that covers a large number of K- and L-edges of medium-Z elements, and M-edges of high-Z elements. To overcome this limitation, the use of a multilayer-based cPGM is proposed, combining a multilayer-coated plane mirror with blazed multilayer gratings. With this combination, the effective efficiency of cPGMs can be increased by an order of magnitude compared with the conventional single-layer cPGMs. In addition, higher resolving power can be achieved with improved efficiency by increasing the blaze angle and working at higher diffraction order. International Union of Crystallography 2017-01-01 /pmc/articles/PMC5182023/ /pubmed/28009556 http://dx.doi.org/10.1107/S1600577516017884 Text en © Xiaowei Yang et al. 2017 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Research Papers
Yang, Xiaowei
Wang, Hongchang
Hand, Matthew
Sawhney, Kawal
Kaulich, Burkhard
Kozhevnikov, Igor V.
Huang, Qiushi
Wang, Zhanshan
Design of a multilayer-based collimated plane-grating monochromator for tender X-ray range
title Design of a multilayer-based collimated plane-grating monochromator for tender X-ray range
title_full Design of a multilayer-based collimated plane-grating monochromator for tender X-ray range
title_fullStr Design of a multilayer-based collimated plane-grating monochromator for tender X-ray range
title_full_unstemmed Design of a multilayer-based collimated plane-grating monochromator for tender X-ray range
title_short Design of a multilayer-based collimated plane-grating monochromator for tender X-ray range
title_sort design of a multilayer-based collimated plane-grating monochromator for tender x-ray range
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5182023/
https://www.ncbi.nlm.nih.gov/pubmed/28009556
http://dx.doi.org/10.1107/S1600577516017884
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