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Related Experiment Video

Updated: Jun 23, 2026

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
06:53

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Published on: July 27, 2018

Low-frequency above-threshold ionization of a model two-electron atom.

R Panfili

    Optics Express
    |May 7, 2009
    PubMed
    Summary

    We calculated the energy spectrum of electrons from a two-electron atom under intense laser pulses. Above-threshold ionization peaks appeared during 13-photon double ionization events.

    Area of Science:

    • Atomic Physics
    • Quantum Mechanics
    • Laser-Matter Interactions

    Background:

    • Understanding electron emission from atoms subjected to intense electromagnetic fields is crucial in atomic physics.
    • The behavior of multi-electron systems under strong laser irradiation presents complex quantum phenomena.

    Purpose of the Study:

    • To investigate the energy spectrum of electrons ejected from a model two-electron atom.
    • To analyze the temporal evolution of this electron energy spectrum when exposed to intense laser pulses.
    • To observe the dynamics of ionization processes, specifically 13-photon double ionization.

    Main Methods:

    • Computational calculation of the electron energy spectrum.
    • Simulation of a model two-electron atom interacting with an intense laser pulse.

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    Last Updated: Jun 23, 2026

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  • Time-resolved analysis of spectral features.

    • Main Results:

    • The energy spectrum of ejected electrons was calculated and its time evolution was tracked.
    • For 13-photon double ionization, distinct above-threshold ionization peaks were observed.
    • These peaks emerged shortly after the laser pulse reached its maximum intensity.

    Conclusions:

    • The study provides insights into the electron dynamics during intense laser-driven atomic ionization.
    • The emergence of above-threshold ionization peaks is a key indicator of the complex electron correlation effects.
    • This work contributes to the understanding of non-linear phenomena in atomic systems interacting with strong laser fields.