Strong-field double ionization at the transition to below the recollision threshold

Ye, D. F.; Liu, J.

doi:10.1103/physreva.81.043402

Cited by 54 publications

(48 citation statements)

References 38 publications

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“…We believe that these collisions have been included in the classical simulations [24,33] and, as pointed out in Ref. [24], there exist "threebody" systems after recollision by the returning electrons, before two electrons are tunnel ionized simultaneously by the laser field.…”

Section: B a New Nsdi Mechanism?mentioning

confidence: 89%

Strong-field nonsequential double ionization of Ar and Ne

et al. 2011

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We investigate the nonsequential double ionization (NSDI) of Ar and Ne based on quantitative rescattering theory (QRS). According to QRS theory, each elementary NSDI process can be calculated by multiplying the returning electron wave packet with appropriate differential electron-ion scattering cross sections. We include (e, 2e) and electron-impact excitation cross sections of Ar + to obtain the correlated electron momentum spectra for the NSDI of Ar by few-cycle pulses to check the dependence of NSDI on the carrier-envelope phase. The results are compared to the ion momentum spectra from the recent experiment of Johnson et al. [Phys. Rev. A 83, 013412 (2011)]. Calculations have also been performed for Ar at another intensity to illustrate the intensity dependence of NSDI and to compare with the earlier data of Feuerstein et al. [Phys. Rev. Lett. 87, 043003 (2001)] and for Ne to illustrate the target dependence. We also address the presence of resonant capture processes in electron-ion collisions in the NSDI spectra.

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Section: B a New Nsdi Mechanism?mentioning

confidence: 89%

Strong-field nonsequential double ionization of Ar and Ne

et al. 2011

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“…To include the tunneling effect in the ionization process, we allow the bound electron to tunnel through the potential barrier whenever it reaches the outer turning point, with a tunneling probability P tul given by the WKB approximation [27,29],…”

Section: Modelmentioning

confidence: 99%

Classical-trajectory simulation of accelerating neutral atoms with polarized intense laser pulses

Xia

Liu

2013

Phys. Rev. A

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In the present paper, we perform the classical trajectory Monte Carlo simulation of the complex dynamics of accelerating neutral atoms with linearly or circularly polarized intense laser pulses. Our simulations involve the ion motion as well as the tunneling ionization and the scattering dynamics of valence electron in the combined Coulomb and electromagnetic fields, for both helium (He) and magnesium (Mg). We show that for He atoms, only linearly polarized lasers can effectively accelerate the atoms, while for Mg atoms, we find that both linearly and circularly polarized lasers can successively accelerate the atoms. The underlying mechanism is discussed and the subcycle dynamics of accelerating trajectories is investigated. We have compared our theoretical results with a recent experiment [Eichmann Nature (London) 461, 1261 (2009)].

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“…Its exit point in space and time and the initial velocity distribution is exactly determined by the semiclassical theory. The bound electron is allowed to tunnel through the potential barrier with a probability given by the WKB approximation whenever it reaches the outer turning point [13,14]. In comparison to the classical models [8,9], the present semiclassical model depicts the initial tunneling of the outer electron exactly and permits the excited electron to tunnel out in the ionization dynamics.…”

mentioning

confidence: 99%

Recollision Dynamics and Phase Diagram for Nonsequential Double Ionization with Circularly Polarized Laser Fields

Xin

et al. 2012

Phys. Rev. Lett.

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A semiclassical quasistatic model is used to investigate the recollision dynamics in circularly polarized laser fields. A velocity window for recollision to occur is found. Only when the return electron's orbits are irregular does significant double ionization take place. The model reproduces the experimental results for magnesium and explains the apparently conflicting experimental results in terms of an analytical formula that demarcates the phase diagram for the nonsequential double ionization in circularly polarized laser fields.

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Strong-field double ionization at the transition to below the recollision threshold

Cited by 54 publications

References 38 publications

Strong-field nonsequential double ionization of Ar and Ne

Strong-field nonsequential double ionization of Ar and Ne

Classical-trajectory simulation of accelerating neutral atoms with polarized intense laser pulses

Recollision Dynamics and Phase Diagram for Nonsequential Double Ionization with Circularly Polarized Laser Fields

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