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Nanosecond X-ray photon correlation spectroscopy using pulse time structure of a storage-ring source.

ABSTRACT: X-ray photon correlation spectroscopy (XPCS) is a routine technique to study slow dynamics in complex systems at storage-ring sources. Achieving nanosecond time resolution with the conventional XPCS technique is, however, still an experimentally challenging task requiring fast detectors and sufficient photon flux. Here, the result of a nanosecond XPCS study of fast colloidal dynamics is shown by employing an adaptive gain integrating pixel detector (AGIPD) operated at frame rates of the intrinsic pulse structure of the storage ring. Correlation functions from single-pulse speckle patterns with the shortest correlation time of 192?ns have been calculated. These studies provide an important step towards routine fast XPCS studies at storage rings.

SUBMITTER: Jo W

PROVIDER: S-EPMC7792991 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature

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Nanosecond X-ray photon correlation spectroscopy using pulse time structure of a storage-ring source.

Jo Wonhyuk W Westermeier Fabian F Rysov Rustam R Leupold Olaf O Schulz Florian F Tober Steffen S Markmann Verena V Sprung Michael M Ricci Allesandro A Laurus Torsten T Aschkan Allahgholi A Klyuev Alexander A Trunk Ulrich U Graafsma Heinz H Grübel Gerhard G Roseker Wojciech W

IUCrJ 20210101 Pt 1

X-ray photon correlation spectroscopy (XPCS) is a routine technique to study slow dynamics in complex systems at storage-ring sources. Achieving nanosecond time resolution with the conventional XPCS technique is, however, still an experimentally challenging task requiring fast detectors and sufficient photon flux. Here, the result of a nanosecond XPCS study of fast colloidal dynamics is shown by employing an adaptive gain integrating pixel detector (AGIPD) operated at frame rates of the intrinsi ...[more]

PMID: 33520248

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