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Summary

The static magnetic field is alternating along the length of the undulator with a wavelength ${\displaystyle \lambda _{u}}$. Electron beam (2) traversing the periodic magnet structure are forced to undergo oscillations and radiate (3: radiation).

• Original image: German Wikipedia: Undulator-prinzip.png
• Figure by/Zeichner: Bastian Holst
• Data/Datum der Aufnahme: 19.07.2005
• Version without text: Arpad Horvath

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