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Ultra-small-angle X-ray photon correlation spectroscopy using the Eiger detector

Successful implementation of the single-photon-counting Eiger 500k pixel array detector for sub-millisecond X-ray photon correlation spectroscopy (XPCS) measurements in the ultra-small-angle scattering region is reported. The performance is demonstrated by measuring the dynamics of dilute silica col...

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Autores principales: Zinn, T., Homs, A., Sharpnack, L., Tinti, G, Fröjdh, E, Douissard, P.-A., Kocsis, M., Möller, J., Chushkin, Y., Narayanan, T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6225738/
https://www.ncbi.nlm.nih.gov/pubmed/30407186
http://dx.doi.org/10.1107/S1600577518013899
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author Zinn, T.
Homs, A.
Sharpnack, L.
Tinti, G
Fröjdh, E
Douissard, P.-A.
Kocsis, M.
Möller, J.
Chushkin, Y.
Narayanan, T.
author_facet Zinn, T.
Homs, A.
Sharpnack, L.
Tinti, G
Fröjdh, E
Douissard, P.-A.
Kocsis, M.
Möller, J.
Chushkin, Y.
Narayanan, T.
author_sort Zinn, T.
collection PubMed
description Successful implementation of the single-photon-counting Eiger 500k pixel array detector for sub-millisecond X-ray photon correlation spectroscopy (XPCS) measurements in the ultra-small-angle scattering region is reported. The performance is demonstrated by measuring the dynamics of dilute silica colloids in aqueous solvents when the detector is operated at different counter depths, 4, 8 and 12 bit. In the fastest mode involving 4 bit parallel readout, a stable frame rate of 22 kHz is obtained that enabled measurement of intensity–intensity autocorrelation functions with good statistics down to the 50 µs range for a sample with sufficient scattering power. The high frame rate and spatial resolution together with large number of pixels of the detector facilitate the investigation of sub-millisecond dynamics over a broad length scale by multispeckle XPCS. This is illustrated by an example involving phoretic motion of colloids during the phase separation of the solvent.
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spelling pubmed-62257382018-11-19 Ultra-small-angle X-ray photon correlation spectroscopy using the Eiger detector Zinn, T. Homs, A. Sharpnack, L. Tinti, G Fröjdh, E Douissard, P.-A. Kocsis, M. Möller, J. Chushkin, Y. Narayanan, T. J Synchrotron Radiat Research Papers Successful implementation of the single-photon-counting Eiger 500k pixel array detector for sub-millisecond X-ray photon correlation spectroscopy (XPCS) measurements in the ultra-small-angle scattering region is reported. The performance is demonstrated by measuring the dynamics of dilute silica colloids in aqueous solvents when the detector is operated at different counter depths, 4, 8 and 12 bit. In the fastest mode involving 4 bit parallel readout, a stable frame rate of 22 kHz is obtained that enabled measurement of intensity–intensity autocorrelation functions with good statistics down to the 50 µs range for a sample with sufficient scattering power. The high frame rate and spatial resolution together with large number of pixels of the detector facilitate the investigation of sub-millisecond dynamics over a broad length scale by multispeckle XPCS. This is illustrated by an example involving phoretic motion of colloids during the phase separation of the solvent. International Union of Crystallography 2018-10-24 /pmc/articles/PMC6225738/ /pubmed/30407186 http://dx.doi.org/10.1107/S1600577518013899 Text en © T. Zinn 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
Zinn, T.
Homs, A.
Sharpnack, L.
Tinti, G
Fröjdh, E
Douissard, P.-A.
Kocsis, M.
Möller, J.
Chushkin, Y.
Narayanan, T.
Ultra-small-angle X-ray photon correlation spectroscopy using the Eiger detector
title Ultra-small-angle X-ray photon correlation spectroscopy using the Eiger detector
title_full Ultra-small-angle X-ray photon correlation spectroscopy using the Eiger detector
title_fullStr Ultra-small-angle X-ray photon correlation spectroscopy using the Eiger detector
title_full_unstemmed Ultra-small-angle X-ray photon correlation spectroscopy using the Eiger detector
title_short Ultra-small-angle X-ray photon correlation spectroscopy using the Eiger detector
title_sort ultra-small-angle x-ray photon correlation spectroscopy using the eiger detector
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6225738/
https://www.ncbi.nlm.nih.gov/pubmed/30407186
http://dx.doi.org/10.1107/S1600577518013899
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