Scattering of ultrashort laser pulse by atomic systems

Golovinski, P. A.; Mikhaĭlov, E. M.

doi:10.1002/lapl.200510094

Cited by 21 publications

(8 citation statements)

References 6 publications

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“…Our analytical model can be further developed in the spirit of the correlated Keldysh-Faisal-Reiss theory [57][58][59]. However, if one wants to study NSDI in very weak laser fields, the model may need a substantial revision because in such a regime, the Coulomb interaction dominants over the interaction with the laser, as a result, the classical trajectories of the electrons after ionization become chaotic (see, e.g., Refs.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Nonsequential double ionization below laser-intensity threshold: Anticorrelation of electrons without excitation of parent ion

et al. 2011

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Two-electron correlated spectra of non-sequential double ionization below laser-intensity threshold are known to exhibit back-to-back scattering of the electrons, viz., the anticorrelation of the electrons. Currently, the widely accepted interpretation of the anticorrelation is recollision-induced excitation of the ion plus subsequent field ionization of the second electron. We argue that another mechanism, namely simultaneous electron emission, when the time of return of the rescattered electron is equal to the time of liberation of the bounded electron (the ion has no time for excitation), can also explain the anticorrelation of the electrons in the deep below laser-intensity threshold regime. Our conclusion is based on the results of the numerical solution of the time-dependent Schrödinger equation for a model system of two one-dimensional electrons as well as an adiabatic analytic model that allows for a closed-form solution.

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Section: Conclusion and Discussionmentioning

confidence: 99%

Nonsequential double ionization below laser-intensity threshold: Anticorrelation of electrons without excitation of parent ion

et al. 2011

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“…Therefore, we assume that ρ a = ρ(r)/N; this gives (13) Ultimately, we obtain (14) Thus, the second part of spectrum (8) can be expressed in terms of the electron density of the atom. Expression (7) containing N terms is proportional to N and is the incoherent (proportional to number N of atomic electrons) part of the spectrum. In expression (8) in which summation is carried out over electron pairs, the number of such pairs is N(N -1); therefore, expression (8) is proportional to N(N -1) and con tains both the coherent (proportional to N 2 ) part of the spectrum and its incoherent (proportional to N) part.…”

Section: General Relationsmentioning

confidence: 99%

“…However, the number of publications in which the reemission of ultrashort pulses is considered theoretically is scarce (see, e.g., [6] and the literature cited therein). The scattering of an ultrashort pulse from an atom was considered in [7] using the classical description. The description of scattering of an ultrashort electromagnetic pulse from a multielectron atom was obtained recently in [6,8] based on perturbation theory taking into account the excitation of a target and the nondipole nature of the electromagnetic interaction.…”

Section: Introductionmentioning

confidence: 99%

Reemission of ultrashort electromagnetic field pulses by multielectron atoms

Макаров

Matveev

2014

J. Exp. Theor. Phys.

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We develop a method for calculating the spectra of reemission of ultrashort (attosecond and shorter) electromagnetic field pulses by neutral multielectron atoms with a nuclear charge from 1 to 92. The method makes it possible to exactly take into account the spatial nonuniformity of the field of an ultrashort pulse and photon momenta in reemission processes. The results are represented as analytical formulas with several coefficients and screening parameters tabulated for all atoms for which the electron densities can be described by the familiar Dirac-Hartree-Fock-Slater model. By way of example, the spectra of remission of ultrashort electromagnetic field pulses by carbon, silicon, germanium, tin, and lead atoms are calculated.

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“…Such a process is related to returning of the electron possessing large energy to a parent atom. Observability of the process, for lowfrequency laser field, tends to decrease, because of the electron package dispersion and a large recovery time that becomes great for its effective interaction with a parent centre [6].…”

Section: Introductionmentioning

confidence: 99%

Radiation of a tunneling electron on a secondary recombination center

Golovinski

Drobyshev

2014

J. Exp. Theor. Phys.

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We discuss the photon emission that occurs due to the radiative recombination of an electron on a nearby center after tunneling ionization. The model of an active electron is used, and analytical solution to three-dimensional problem is obtained. The dependence of the photon emission from a distance between centers of ionization and a recombination, and also the electric field orientation are investigated. The formulas for probability of recombination radiation are derived.

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Scattering of ultrashort laser pulse by atomic systems

Cited by 21 publications

References 6 publications

Nonsequential double ionization below laser-intensity threshold: Anticorrelation of electrons without excitation of parent ion

Nonsequential double ionization below laser-intensity threshold: Anticorrelation of electrons without excitation of parent ion

Reemission of ultrashort electromagnetic field pulses by multielectron atoms

Radiation of a tunneling electron on a secondary recombination center

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