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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...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2018
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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. |
format | Online Article Text |
id | pubmed-6225738 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
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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