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An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers
Published on: October 23, 2018
Picosecond time-resolved laser pump/X-ray probe experiments using a gated single-photon-counting area detector.
T Ejdrup1, H T Lemke, K Haldrup
1Danish National Research Foundation Centre for Molecular Movies, Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark. ejdrup@fys.ku.dk
Journal of Synchrotron Radiation
|April 28, 2009
Summary
This study demonstrates a novel method for achieving 60 picosecond time-resolution in X-ray experiments using a gated PILATUS detector. This advancement enables pulse duration-limited data collection without mechanical choppers.
Area of Science:
- Materials Science
- Physics
- X-ray Science
Background:
- Time-resolved X-ray experiments are crucial for studying dynamic processes.
- Conventional methods often rely on mechanical choppers, limiting time resolution.
- Recent advancements in X-ray detectors offer new possibilities for high-resolution studies.
Purpose of the Study:
- To demonstrate the novel use of a PILATUS detector for time-resolved pump/probe X-ray experiments.
- To achieve X-ray pulse duration limited time-resolution at the Advanced Photon Source (APS).
- To showcase the capability of a gated PILATUS detector in selective X-ray pulse detection.
Main Methods:
- Utilized a gated PILATUS detector at the Advanced Photon Source (APS).
- Operated the detector in a 24 bunch mode for selective X-ray pulse detection.
- Conducted experiments on polycrystalline organic thin films of alpha-perylene.
Main Results:
- Demonstrated the capability of the gated PILATUS detector to achieve X-ray pulse duration limited time-resolution.
- Achieved a time-resolution of 60 picoseconds (ps).
- Successfully recorded time-resolved data without employing a mechanical chopper array.
Conclusions:
- The gated PILATUS detector enables X-ray pulse duration limited time-resolution in pump/probe experiments.
- This method offers a significant advancement for high-resolution X-ray studies.
- It is the first demonstration of such data acquisition using an area detector without mechanical choppers.
