Dynamic extension of the Keldysh-Rutherford model for attoclocks

Vladislav V. Serov*, Anatoli S. Kheifets

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The classical Keldysh-Rutherford (KR) model of the attoclock [A. W. Bray et al., Phys. Rev. Lett. 121, 123201 (2018)0031-900710.1103/PhysRevLett.121.123201] was introduced to interpret attosecond angular streaking on atomic hydrogen in the low laser intensity regime. In this model, the photoelectron acquires its final velocity immediately after exiting the tunnel and then scatters elastically on the Coulomb field of the residual ion. In the present work, we make a dynamic extension of the KR model and consider a gradual acceleration of the photoelectron by the driving laser field. By doing so, we observe and explain a significant displacement of the peaks of the angular distribution of the mean photoelectron momentum and the angular resolved ionization probability. These peaks should be close within the original KR model.

    Original languageEnglish
    Article number063106
    JournalPhysical Review A
    Volume105
    Issue number6
    DOIs
    Publication statusPublished - Jun 2022

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