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Updated: Jun 2, 2026
An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers
Published on: October 23, 2018
Development of a hard X-ray delay line for X-ray photon correlation spectroscopy and jitter-free pump-probe
Wojciech Roseker1, Hermann Franz, Horst Schulte-Schrepping
1Hamburger Synchrotronstrahlungslabor am Deutschen Elektronen Synchrotron, Notkestrasse 85, D-22603 Hamburg, Germany. wojciech.roseker@desy.de
Abstract:
A hard X-ray delay line capable of splitting and delaying single X-ray pulses has been developed with the aim of performing X-ray photon correlation spectroscopy (XPCS) and X-ray pump-probe experiments at hard X-ray free-electron laser sources. The performance of the device was tested with 8.39 keV synchrotron radiation. Time delays up to 2.95 ns have been demonstrated. The feasibility of the device for performing XPCS studies was tested by recording static speckle patterns. The achieved speckle contrast of 56% indicates the possibility of performing ultra-fast XPCS studies with the delay line.
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