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Resonant X-ray emission spectroscopy from broadband stochastic pulses at an X-ray free electron laser
Hard X-ray spectroscopy is an element specific probe of electronic state, but signals are weak and require intense light to study low concentration samples. Free electron laser facilities offer the highest intensity X-rays of any available light source. The light produced at such facilities is stoch...
Autores principales: | , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8920481/ https://www.ncbi.nlm.nih.gov/pubmed/35291552 http://dx.doi.org/10.1038/s42004-021-00512-3 |
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author | Fuller, Franklin D. Loukianov, Anton Takanashi, Tsukasa You, Daehyun Li, Yiwen Ueda, Kiyoshi Fransson, Thomas Yabashi, Makina Katayama, Tetsuo Weng, Tsu-Chien Alonso-Mori, Roberto Bergmann, Uwe Jan Kern Yachandra, Vittal K. Wernet, Philippe Yano, Junko |
author_facet | Fuller, Franklin D. Loukianov, Anton Takanashi, Tsukasa You, Daehyun Li, Yiwen Ueda, Kiyoshi Fransson, Thomas Yabashi, Makina Katayama, Tetsuo Weng, Tsu-Chien Alonso-Mori, Roberto Bergmann, Uwe Jan Kern Yachandra, Vittal K. Wernet, Philippe Yano, Junko |
author_sort | Fuller, Franklin D. |
collection | PubMed |
description | Hard X-ray spectroscopy is an element specific probe of electronic state, but signals are weak and require intense light to study low concentration samples. Free electron laser facilities offer the highest intensity X-rays of any available light source. The light produced at such facilities is stochastic, with spikey, broadband spectra that change drastically from shot to shot. Here, using aqueous ferrocyanide, we show that the resonant X-ray emission (RXES) spectrum can be inferred by correlating for each shot the fluorescence intensity from the sample with spectra of the fluctuating, self-amplified spontaneous emission (SASE) source. We obtain resolved narrow and chemically rich information in core-to-valence transitions of the pre-edge region at the Fe K-edge. Our approach avoids monochromatization, provides higher photon flux to the sample, and allows non-resonant signals like elastic scattering to be simultaneously recorded. The spectra obtained match well with spectra measured using a monochromator. We also show that inaccurate measurements of the stochastic light spectra reduce the measurement efficiency of our approach. |
format | Online Article Text |
id | pubmed-8920481 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-89204812022-03-14 Resonant X-ray emission spectroscopy from broadband stochastic pulses at an X-ray free electron laser Fuller, Franklin D. Loukianov, Anton Takanashi, Tsukasa You, Daehyun Li, Yiwen Ueda, Kiyoshi Fransson, Thomas Yabashi, Makina Katayama, Tetsuo Weng, Tsu-Chien Alonso-Mori, Roberto Bergmann, Uwe Jan Kern Yachandra, Vittal K. Wernet, Philippe Yano, Junko Commun Chem Article Hard X-ray spectroscopy is an element specific probe of electronic state, but signals are weak and require intense light to study low concentration samples. Free electron laser facilities offer the highest intensity X-rays of any available light source. The light produced at such facilities is stochastic, with spikey, broadband spectra that change drastically from shot to shot. Here, using aqueous ferrocyanide, we show that the resonant X-ray emission (RXES) spectrum can be inferred by correlating for each shot the fluorescence intensity from the sample with spectra of the fluctuating, self-amplified spontaneous emission (SASE) source. We obtain resolved narrow and chemically rich information in core-to-valence transitions of the pre-edge region at the Fe K-edge. Our approach avoids monochromatization, provides higher photon flux to the sample, and allows non-resonant signals like elastic scattering to be simultaneously recorded. The spectra obtained match well with spectra measured using a monochromator. We also show that inaccurate measurements of the stochastic light spectra reduce the measurement efficiency of our approach. Nature Publishing Group UK 2021-06-07 /pmc/articles/PMC8920481/ /pubmed/35291552 http://dx.doi.org/10.1038/s42004-021-00512-3 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Fuller, Franklin D. Loukianov, Anton Takanashi, Tsukasa You, Daehyun Li, Yiwen Ueda, Kiyoshi Fransson, Thomas Yabashi, Makina Katayama, Tetsuo Weng, Tsu-Chien Alonso-Mori, Roberto Bergmann, Uwe Jan Kern Yachandra, Vittal K. Wernet, Philippe Yano, Junko Resonant X-ray emission spectroscopy from broadband stochastic pulses at an X-ray free electron laser |
title | Resonant X-ray emission spectroscopy from broadband stochastic pulses at an X-ray free electron laser |
title_full | Resonant X-ray emission spectroscopy from broadband stochastic pulses at an X-ray free electron laser |
title_fullStr | Resonant X-ray emission spectroscopy from broadband stochastic pulses at an X-ray free electron laser |
title_full_unstemmed | Resonant X-ray emission spectroscopy from broadband stochastic pulses at an X-ray free electron laser |
title_short | Resonant X-ray emission spectroscopy from broadband stochastic pulses at an X-ray free electron laser |
title_sort | resonant x-ray emission spectroscopy from broadband stochastic pulses at an x-ray free electron laser |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8920481/ https://www.ncbi.nlm.nih.gov/pubmed/35291552 http://dx.doi.org/10.1038/s42004-021-00512-3 |
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