Cargando…
Spatial displacement of forward-diffracted X-ray beams by perfect crystals
Time-delayed, narrow-band echoes generated by forward Bragg diffraction of an X-ray pulse by a perfect thin crystal are exploited for self-seeding at hard X-ray free-electron lasers. Theoretical predictions indicate that the retardation is strictly correlated to a transverse displacement of the echo...
Autores principales: | , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2018
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5831586/ https://www.ncbi.nlm.nih.gov/pubmed/29493536 http://dx.doi.org/10.1107/S2053273318001419 |
_version_ | 1783303165838360576 |
---|---|
author | Rodriguez-Fernandez, A. Esposito, V. Sanchez, D. F. Finkelstein, K. D. Juranic, P. Staub, U. Grolimund, D. Reiche, S. Pedrini, B. |
author_facet | Rodriguez-Fernandez, A. Esposito, V. Sanchez, D. F. Finkelstein, K. D. Juranic, P. Staub, U. Grolimund, D. Reiche, S. Pedrini, B. |
author_sort | Rodriguez-Fernandez, A. |
collection | PubMed |
description | Time-delayed, narrow-band echoes generated by forward Bragg diffraction of an X-ray pulse by a perfect thin crystal are exploited for self-seeding at hard X-ray free-electron lasers. Theoretical predictions indicate that the retardation is strictly correlated to a transverse displacement of the echo pulses. This article reports the first experimental observation of the displaced echoes. The displacements are in good agreement with simulations relying on the dynamical diffraction theory. The echo signals are characteristic for a given Bragg reflection, the structure factor and the probed interplane distance. The reported results pave the way to exploiting the signals as an online diagnostic tool for hard X-ray free-electron laser seeding and for dynamical diffraction investigations of strain at the femtosecond timescale. |
format | Online Article Text |
id | pubmed-5831586 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
spelling | pubmed-58315862018-03-19 Spatial displacement of forward-diffracted X-ray beams by perfect crystals Rodriguez-Fernandez, A. Esposito, V. Sanchez, D. F. Finkelstein, K. D. Juranic, P. Staub, U. Grolimund, D. Reiche, S. Pedrini, B. Acta Crystallogr A Found Adv Research Papers Time-delayed, narrow-band echoes generated by forward Bragg diffraction of an X-ray pulse by a perfect thin crystal are exploited for self-seeding at hard X-ray free-electron lasers. Theoretical predictions indicate that the retardation is strictly correlated to a transverse displacement of the echo pulses. This article reports the first experimental observation of the displaced echoes. The displacements are in good agreement with simulations relying on the dynamical diffraction theory. The echo signals are characteristic for a given Bragg reflection, the structure factor and the probed interplane distance. The reported results pave the way to exploiting the signals as an online diagnostic tool for hard X-ray free-electron laser seeding and for dynamical diffraction investigations of strain at the femtosecond timescale. International Union of Crystallography 2018-02-23 /pmc/articles/PMC5831586/ /pubmed/29493536 http://dx.doi.org/10.1107/S2053273318001419 Text en © A. Rodriguez-Fernandez et al. 2018 http://creativecommons.org/licenses/by/2.0/uk/ 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.http://creativecommons.org/licenses/by/2.0/uk/ |
spellingShingle | Research Papers Rodriguez-Fernandez, A. Esposito, V. Sanchez, D. F. Finkelstein, K. D. Juranic, P. Staub, U. Grolimund, D. Reiche, S. Pedrini, B. Spatial displacement of forward-diffracted X-ray beams by perfect crystals |
title | Spatial displacement of forward-diffracted X-ray beams by perfect crystals |
title_full | Spatial displacement of forward-diffracted X-ray beams by perfect crystals |
title_fullStr | Spatial displacement of forward-diffracted X-ray beams by perfect crystals |
title_full_unstemmed | Spatial displacement of forward-diffracted X-ray beams by perfect crystals |
title_short | Spatial displacement of forward-diffracted X-ray beams by perfect crystals |
title_sort | spatial displacement of forward-diffracted x-ray beams by perfect crystals |
topic | Research Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5831586/ https://www.ncbi.nlm.nih.gov/pubmed/29493536 http://dx.doi.org/10.1107/S2053273318001419 |
work_keys_str_mv | AT rodriguezfernandeza spatialdisplacementofforwarddiffractedxraybeamsbyperfectcrystals AT espositov spatialdisplacementofforwarddiffractedxraybeamsbyperfectcrystals AT sanchezdf spatialdisplacementofforwarddiffractedxraybeamsbyperfectcrystals AT finkelsteinkd spatialdisplacementofforwarddiffractedxraybeamsbyperfectcrystals AT juranicp spatialdisplacementofforwarddiffractedxraybeamsbyperfectcrystals AT staubu spatialdisplacementofforwarddiffractedxraybeamsbyperfectcrystals AT grolimundd spatialdisplacementofforwarddiffractedxraybeamsbyperfectcrystals AT reiches spatialdisplacementofforwarddiffractedxraybeamsbyperfectcrystals AT pedrinib spatialdisplacementofforwarddiffractedxraybeamsbyperfectcrystals |