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The Liquid Jet Endstation for Hard X-ray Scattering and Spectroscopy at the Linac Coherent Light Source
Cali Antolini1, Victor Sosa Alfaro1, Marco Reinhard1
1SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
Molecules (Basel, Switzerland)
|May 25, 2024
Summary
The liquid jet endstation (LJE) at the Linac Coherent Light Source (LCLS) enables ultrafast chemical dynamics studies in solution. It uses X-ray techniques to resolve atomic and electronic changes on femtosecond timescales.
Area of Science:
- Chemical dynamics
- Ultrafast spectroscopy
- X-ray science
Background:
- X-ray free electron lasers (XFELs) offer unprecedented capabilities for studying chemical dynamics.
- Specialized experimental setups are crucial for maximizing the potential of XFELs.
- The Linac Coherent Light Source (LCLS) provides intense, short X-ray pulses for probing atomic and electronic structures.
Purpose of the Study:
- To describe the design and capabilities of the liquid jet endstation (LJE) at LCLS.
- To detail the experimental techniques enabled by the LJE for studying solution systems.
- To highlight the diagnostics and methods for optimizing experiments at the LJE.
Main Methods:
- Utilizes a pump-probe setup with an optical laser and hard X-ray pulses.
- Employs X-ray solution scattering (XSS), X-ray absorption spectroscopy (XAS), and X-ray emission spectroscopy (XES).
- Features a liquid jet system for continuous sample delivery at high repetition rates.
Main Results:
- The LJE facilitates the study of photochemistry and biochemistry in solution.
- Enables resolution of structural and electronic dynamics on femtosecond timescales.
- Demonstrates reliable sample delivery with millimolar concentrations and low sample volumes.
Conclusions:
- The LJE is a versatile endstation for ultrafast X-ray science in solution.
- Advanced diagnostics and overlap methods ensure experimental efficiency.
- The LJE supports a wide range of scientific investigations into dynamic processes.
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