Direct multiphoton transitions to highly excited two-electron states

作者: M Hou , P Breger , G Petite , P Agostini

DOI: 10.1088/0953-4075/23/19/003

关键词: PhotoionizationAtomic physicsElectronResonance (particle physics)Excited stateMolecular electronic transitionIonizationPhysicsPhotoemission spectroscopySpectral line

摘要: Photoelectron energy spectra from multiphoton ionization of magnesium reveal that direct nine or ten-photon transitions to 4p and possibly 5p thresholds are taking place around 586 nm about 1012 W cm-2. Lineshapes indicate such enhanced by the intermediate four-photon resonance with 3p2 1S two-electron state, above threshold.

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