Abstract
A simple method for generating single-spike hard x-ray pulses in free-electron lasers (FELs) has been developed at the Linac Coherent Light Source (LCLS). This is realized by nonlinear bunch compression using 20-pC bunch charge, demonstrated in the hard x-ray regime at 5.6 and 9 keV, respectively. Measurements show about half of the FEL shots containing a single-spike spectrum. At 5.6-keV photon energy, the single-spike shots have a mean pulse energy of about with 70% intensity fluctuation and the pulse full width at half maximum is evaluated to be at 200-as level.
- Received 12 May 2017
DOI:https://doi.org/10.1103/PhysRevLett.119.154801
© 2017 American Physical Society
Physics Subject Headings (PhySH)
Synopsis
Attosecond X-Ray Flashes
Published 10 October 2017
X-ray free-electron lasers have been used to generate single spikes of hard x rays that are only 200 attoseconds long.
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