A Femtosecond X-ray Undulator Source for EUV Pump/X-ray Probe Experiments at FLASH2
R. Khubbutdinov, V. Kocharyan, E. Saldin
TL;DR
This paper demonstrates a femtosecond X-ray undulator source at FLASH2, enabling tunable, ultrafast X-ray experiments in the EUV range for pump/probe applications, advancing capabilities in time-resolved spectroscopy.
Contribution
It introduces the APPLE-III undulator device at FLASH2, providing tunable femtosecond X-rays for EUV pump/probe experiments, a novel application for this facility.
Findings
Successful generation of tunable femtosecond X-rays in the 2-3.5 keV range
Demonstration of EUV FEL laser pump/probe absorption experiments
Potential for time-resolved diffraction studies at FLASH2
Abstract
The recently implemented APPLE-III device at FLASH2 is an undulator source providing tunable, femtosecond spontaneous X-rays in the range of 2 - 3.5 keV at the 3rd and 5th harmonics. This work demonstrates its applicability for EUV FEL laser pump/probe absorption and diffraction experiments.
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