Collective Effects in Multiphoton Ionization: Application to Two-Photon One-Electron Ionization of Xenon
The purpose of the present work1–3 is to study various aspects of multiphoton ionization of heavy atoms4–11 which are known to show collective behaviour in single photon ionization.12–14 ultimate goal is to treat the non-linear collective and single- particle dynamics in cases where the field is strong enough to seriously perturb the atomic states (dynamic Stark shift and broadening; ponderomotive effects; harmonic generation, etc.). However, this is a rather formidable problem for a many-electron atom. Strong-field effects have essentially only been seriously considered within one- electron formulations and model calculations, and many problems remain to be solved.
KeywordsRandom Phase Approximation Multiphoton Ionization Single Photon Ionization Ponderomotive Effect Dynamic Stark Shift
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