Strong field double ionization: What is under the "knee"?
arXiv:0905.0181 · doi:10.1088/0953-4075/42/16/165602
Abstract
Both uncorrelated ("sequential") and correlated ("nonsequential") processes contribute to the double ionization of the helium atom in strong laser pulses. The double ionization probability has a characteristic "knee" shape as a function of the intensity of the pulse. We investigate the phase-space dynamics of this system, specifically by finding the dynamical structures that regulate the ionization processes. The emerging picture complements the recollision scenario by clarifying the distinct roles played by the recolliding and core electrons. Our analysis leads to verifiable predictions of the intensities where qualitiative changes in ionization occur, leading to the hallmark "knee" shape.
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Cited by in corpus (10)
- Recollisions and correlated double ionization with circularly polarized light
- From recollisions to the knee: A road map for double ionization in intense laser fields
- Mechanism of delayed double ionization in a strong laser field
- Restricted space ab initio models for double ionization by strong laser pulses
- Strong field double ionization of H2 : Insights from nonlinear dynamics
- Dynamics of recollisions for the double ionization of atoms in intense laser fields
- Delayed double ionization as a signature of Hamiltonian chaos
- Attoscience in Phase Space
- Controlling double ionization of atoms in intense bichromatic laser pulses
- Simulated annealing algorithm for finding periodic orbits of multi-electron atomic systems