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

IUCrJ

Wonhyuk Jo¹  Verena Markmann¹  Ulrich Trunk¹  Wojciech Roseker¹  Allesandro Ricci¹  Allahgholi Aschkan¹  Torsten Laurus¹  Fabian Westermeier¹  Olaf Leupold¹  Alexander Klyuev¹  Michael Sprung¹  Heinz Graafsma¹  Gerhard Grübel¹  Rustam Rysov¹  Steffen Tober²  Florian Schulz² 

[1] Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, 22607 Hamburg, Germany;Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany;

关键词: materials science;    nanoscience;    saxs;    dynamical studies;    time-resolved studies;    x-ray photon correlation spectroscopy;    adaptive gain integrating pixel detectors;    storage rings;    pulse structures;   

DOI  :  10.1107/S2052252520015778

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown