Microbunching instability and XFEL longitudinal coherence
In X-ray lasers the electron bunch is compressed to boost its current, but tiny density ripples grow during compression and spoil the beam. The X-ray pulses also start from random noise, so their colors are messy and making them clean is still hard.
Why it matters
These effects limit the spectral purity, brightness and stability of X-ray free-electron lasers.
Review
C. Pellegrini, A. Marinelli, S. Reiche, The physics of x-ray free-electron lasers, Reviews of Modern Physics, 2016. https://doi.org/10.1103/RevModPhys.88.015006 reference checked
See also
- Special case of Coherence and wavelength limits of free-electron lasers
Timestamp record
- Signed record
- 96829e4a8214…
- Public log
- Entry 67, in checkpoint 2,123
- In the log by
- Block 969,698, 2026-10-03
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