Artist’s impression of attosecond pulse generation (IMAGE)
Caption
In an undulator with permanent magnets of alternating polarisation, a wiggling cloud of electrons emits a sharp, short pulse of X-rays.
https://media.xfel.eu/XFELmediabank/catalog/Presse_XFEL_2023/r/75078
Credit
European XFEL/Tobias Wüstefeld
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Original content