Comparing classical and quantum dynamics of strong-field double ionization

Panfili, R.; Eberly, J. H.; Haan, S. L.

doi:10.1364/oe.8.000431

Cited by 144 publications

(107 citation statements)

References 6 publications

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“…Remarkably, classical mechanics is able to identify both sequential and nonsequential pathways leading to double ionization and reproduces the experimental and computational observations closely [19][20][21]. This success was ascribed to the paramount role of the electronelectron interaction which is present both in quantum and classical models.…”

Section: Classical Modelsmentioning

confidence: 74%

“…The parent model is a two active electron atom with soft-Coulomb potentials subjected to an intense and short linearly polarized laser pulse in the dipole approximation [19][20][21]. The corresponding Hamiltonian reads:…”

Section: Classical Modelsmentioning

confidence: 99%

“…Two special cases have been studied in the literature. They correspond to α 1 = α 2 = 0, where the electrons are aligned with the axis of polarization [19,[23][24][25], and α 1 = −α 2 = π/6 [27,28]. In the first case, the reduced Hamiltonian reads:…”

Section: A Dimensionally Reduced Two Electron Modelsmentioning

confidence: 99%

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Delayed double ionization as a signature of Hamiltonian chaos

et al. 2012

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We analyze the dynamical processes behind delayed double ionization of atoms subjected to strong laser pulses. Using reduced models, we show that these processes are a signature of Hamiltonian chaos which results from the competition between the laser field and the Coulomb attraction to the nucleus. In particular, we exhibit the paramount role of the unstable manifold of selected periodic orbits which lead to a delay in these double ionizations. Among delayed double ionizations, we consider the case of "Recollision Excitation with Subsequent Ionization" (RESI) and, as a hallmark of this mechanism, we predict oscillations in the ratio of RESI to double ionization yields versus laser intensity. We discuss the significance of the dimensionality of the reduced models for the analysis of the dynamical processes behind delayed double ionization.

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Section: Classical Modelsmentioning

confidence: 74%

Section: Classical Modelsmentioning

confidence: 99%

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Delayed double ionization as a signature of Hamiltonian chaos

et al. 2012

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“…Therefore we work with the classical Hamiltonian model of pseudo-two electron atoms with soft Coulomb potentials [22]. The Hamiltonian is given by [23]:…”

mentioning

confidence: 99%

Recollisions and Correlated Double Ionization with Circularly Polarized Light

2010

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It is generally believed that the recollision mechanism of atomic nonsequential double ionization is suppressed in circularly polarized laser fields because the returning electron is unlikely to encounter the core. On the contrary, we find that recollision can and does significantly enhance double ionization, even to the extent of forming a "knee", the signature of the nonsequential process. Using a classical model, we explain two apparently contradictory experiments, the absence of a knee for helium and its presence for magnesium.

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“…Therefore we work with the classical Hamiltonian model of pseudo-two electron atoms with soft Coulomb potentials [24,25]. We consider a two active electron model atom subjected to a strong and short circularly polarized laser field.…”

Section: Introductionmentioning

confidence: 99%

Microcanonical initial distribution strategy for classical simulations in strong field physics

Mauger

Kamor

Chandre

et al. 2013

UVX 2012 - 11e Colloque Sur Les Sources Cohérentes Et Incohérentes UV, VUV Et X ; Applications Et Développements Récents

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Abstract. Classical models in strong field physics typically require a careful selection of initial conditions which correspond accurately to the state selection. We compare two such procedures, the (many) pilot atom technique and the microcanonical strategy. We show that for some range of parameters, the pilot atom strategy may lead to artifacts due to the correlations between the different initial conditions. On the other hand, the microcanonical strategy is, by design, free of such artifacts for all admissible parameters.

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Comparing classical and quantum dynamics of strong-field double ionization

Cited by 144 publications

References 6 publications

Delayed double ionization as a signature of Hamiltonian chaos

Delayed double ionization as a signature of Hamiltonian chaos

Recollisions and Correlated Double Ionization with Circularly Polarized Light

Microcanonical initial distribution strategy for classical simulations in strong field physics

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