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Improvement of ultra-small-angle XPCS with the Extremely Brilliant Source.

ABSTRACT: Recent technical developments and the performance of the X-ray photon correlation spectroscopy (XPCS) method over the ultra-small-angle range with the Extremely Brilliant Source (EBS) at the ESRF are described. With higher monochromatic coherent photon flux (∼10¹² photons s^-1) provided by the EBS and the availability of a fast pixel array detector (EIGER 500K detector operating at 23000 frames s^-1), XPCS has become more competitive for probing faster dynamics in relatively dilute suspensions. One of the goals of the present development is to increase the user-friendliness of the method. This is achieved by means of a Python-based graphical user interface that enables online visualization and analysis of the processed data. The improved performance of XPCS on the Time-Resolved Ultra-Small-Angle X-ray Scattering instrument (ID02 beamline) is demonstrated using dilute model colloidal suspensions in several different applications.

SUBMITTER: Chevremont W

PROVIDER: S-EPMC10833426 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature

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Improvement of ultra-small-angle XPCS with the Extremely Brilliant Source.

Chèvremont William W Zinn Thomas T Narayanan Theyencheri T

Journal of synchrotron radiation 20240101 Pt 1

Recent technical developments and the performance of the X-ray photon correlation spectroscopy (XPCS) method over the ultra-small-angle range with the Extremely Brilliant Source (EBS) at the ESRF are described. With higher monochromatic coherent photon flux (∼1012 photons s-1) provided by the EBS and the availability of a fast pixel array detector (EIGER 500K detector operating at 23000 frames s-1), XPCS has become more competitive for probing faster dynamics in ...[more]

PMID: 37933847

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