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Ionisation von Helium in einem ultrakurzen Laserimpuls. Das Elektron wird zu den Zeitpunkten t1 bzw. t2 im jeweiligen Maximum der elektrischen Feldamplitude (gelbe Kurve) aus dem Atompotential (blauer Trichter) freigesetzt. Die beiden Teilwege tasten dabei das Rumpfion in verschiedener Weise ab. Die entsprechenden Wellenpakte des auslaufenden Elektrons (rechts) überlagern sich schließlich und interferieren.
Source: MPI für Kernphysik
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