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Title: Submillisecond X-ray Photon Correlation Spectroscopy from Pixel-Array-Detector with Fast Dual Gating and No Readout Deadtime

Small-angle scattering X-ray Photon Correlation Spectroscopy (XPCS) studies were performed using a novel photon-counting pixel array detector (PAD) with dual counters for each pixel. Each counter can be read out independently from the other to ensure there is no readout deadtime between the neighboring frames. A maximum frame rate of 11.8 kHz was achieved. Results on test samples show good agreement with simple diffusion. The potential of extending the time resolution of XPCS beyond the limit set by the detector frame rate using dual counters is also discussed.
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Publication Date:
OSTI Identifier:
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Synchrotron Radiation; Journal Volume: 23; Journal Issue: Part 3
Research Org:
Argonne National Laboratory (ANL)
Sponsoring Org:
USDOE Office of Science
Country of Publication:
United States
Pixel array detector (PAD); high frame rate; small angle x-ray scattering (SAXS); two counters; x-ray photon correlation spectroscopy (XPCS)