"Double ionization in the perturbative and tunneling regimes". "Multiply charged ions induced by multiphoton absorption in rare gases at 0.53 μm". "Multiply Charged Ions Formed by Multiphoton Absorption Processes in the Continuum". Journal of Physics B: Atomic, Molecular and Optical Physics. "Multiphoton Ca2+production occurring before the onset of Ca+saturation: Is it a fingerprint of direct double ionization?". The maximum energy (in atomic units) gained by the recolliding electron from the laser field is ∼ 3.2 U p autoionizing state: Experimental and theoretical analysis". This mechanism is known as the three-step model of non-sequential double ionization, which is also closely related to the three step model of high harmonic generation.ĭynamics of double ionization within the three-step model strongly depends on the laser field intensity.
Parent ion results in further collisional excitation and/or This electron acts as an "atomic antenna", absorbing theĮnergy from the laser field between ionization and recollision andĭepositing it into the parent ion. For noble gas atoms in infrared laser fields, following one-electron ionization, the liberated electron can recollide The mechanism of non-sequential double ionization in noble gas atoms differs from the one in alkaline earth atoms. Multiple ionization has also been observed.
In infrared fields and for higher intensities. The interest to this phenomenon grew rapidly after it was rediscovered Non-sequential double ionization in alkaline earth atomsįor noble gas atoms, non-sequential double ionization was first observed by L'Huillier.
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