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Improving temporal resolution of ultrafast electron diffraction by eliminating arrival time jitter induced by radiofrequency bunch compression cavities

The temporal resolution of sub-relativistic ultrafast electron diffraction (UED) is generally limited by the radio frequency (RF) phase and amplitude jitter of the RF lenses that are used to compress the electron pulses. We theoretically show how to circumvent this limitation by using a combination...

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Detalles Bibliográficos
Autores principales: Franssen, J. G. H., Luiten, O. J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Crystallographic Association 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5446284/
https://www.ncbi.nlm.nih.gov/pubmed/28580367
http://dx.doi.org/10.1063/1.4984104
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author Franssen, J. G. H.
Luiten, O. J.
author_facet Franssen, J. G. H.
Luiten, O. J.
author_sort Franssen, J. G. H.
collection PubMed
description The temporal resolution of sub-relativistic ultrafast electron diffraction (UED) is generally limited by the radio frequency (RF) phase and amplitude jitter of the RF lenses that are used to compress the electron pulses. We theoretically show how to circumvent this limitation by using a combination of several RF compression cavities. We show that if powered by the same RF source and with a proper choice of RF field strengths, RF phases, and distances between the cavities, the combined arrival time jitter due to RF phase jitter of the cavities is cancelled at the compression point. We also show that the effect of RF amplitude jitter on the temporal resolution is negligible when passing through the cavity at a RF phase optimal for (de)compression. This will allow improvement of the temporal resolution in UED experiments to well below 100 fs.
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spelling pubmed-54462842017-06-02 Improving temporal resolution of ultrafast electron diffraction by eliminating arrival time jitter induced by radiofrequency bunch compression cavities Franssen, J. G. H. Luiten, O. J. Struct Dyn Ultrafast Structural Dynamics—A Tribute to Ahmed H. Zewail The temporal resolution of sub-relativistic ultrafast electron diffraction (UED) is generally limited by the radio frequency (RF) phase and amplitude jitter of the RF lenses that are used to compress the electron pulses. We theoretically show how to circumvent this limitation by using a combination of several RF compression cavities. We show that if powered by the same RF source and with a proper choice of RF field strengths, RF phases, and distances between the cavities, the combined arrival time jitter due to RF phase jitter of the cavities is cancelled at the compression point. We also show that the effect of RF amplitude jitter on the temporal resolution is negligible when passing through the cavity at a RF phase optimal for (de)compression. This will allow improvement of the temporal resolution in UED experiments to well below 100 fs. American Crystallographic Association 2017-05-26 /pmc/articles/PMC5446284/ /pubmed/28580367 http://dx.doi.org/10.1063/1.4984104 Text en © 2017 Author(s). 2329-7778/2017/4(4)/044026/10 All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Ultrafast Structural Dynamics—A Tribute to Ahmed H. Zewail
Franssen, J. G. H.
Luiten, O. J.
Improving temporal resolution of ultrafast electron diffraction by eliminating arrival time jitter induced by radiofrequency bunch compression cavities
title Improving temporal resolution of ultrafast electron diffraction by eliminating arrival time jitter induced by radiofrequency bunch compression cavities
title_full Improving temporal resolution of ultrafast electron diffraction by eliminating arrival time jitter induced by radiofrequency bunch compression cavities
title_fullStr Improving temporal resolution of ultrafast electron diffraction by eliminating arrival time jitter induced by radiofrequency bunch compression cavities
title_full_unstemmed Improving temporal resolution of ultrafast electron diffraction by eliminating arrival time jitter induced by radiofrequency bunch compression cavities
title_short Improving temporal resolution of ultrafast electron diffraction by eliminating arrival time jitter induced by radiofrequency bunch compression cavities
title_sort improving temporal resolution of ultrafast electron diffraction by eliminating arrival time jitter induced by radiofrequency bunch compression cavities
topic Ultrafast Structural Dynamics—A Tribute to Ahmed H. Zewail
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5446284/
https://www.ncbi.nlm.nih.gov/pubmed/28580367
http://dx.doi.org/10.1063/1.4984104
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