Third-order S-matrix study of electron-electron correlation in nonsequential double ionization

Jia, Xin; Hao, Xiaolei; Fan, Ding; Li, Weidong; Hu, Shiqiang; Chen, J

doi:10.1088/1361-6455/aafbd6

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…A considerable number of quantum mechanical models are based on the solution of the time-dependent Schrödinger equation [81,[86][87][88][89][90][91][92][93]. Several works applied the strong-field approximation [94] and the intense-field many-body S-matrix [39] theory [95][96][97][98][99][100][101][102][103]. The so-called quantitative rescattering (QRS) theory [104] proved to be an efficient description of NSDI [105][106][107].…”

Section: Introductionmentioning

confidence: 99%

Laser-induced nonsequential double ionization of helium: classical model calculations

Sarkadi

2020

J. Phys. B: At. Mol. Opt. Phys.

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We have investigated the double ionization of helium induced by 45 fs, 394 nm linearly polarized laser pulses for intensities (2.5–150) × 1014 W cm−2. The time evolution of the process was determined by applying the classical ensemble approximation (CEA) model. The results of the calculations obtained for the double-to-single ionization ratio, the momentum distribution of the He2+ recoil ion and the correlated two-electron momentum distribution are compared with the recent experimental data of Henrichs et al (2018 Phys. Rev. A 98 043405). The standard CEA model failed to reproduce the basic features of the experiment. A considerable improvement in the description of the experimental data was achieved by including a two-step process in the model: the formation of a transient double excited state in the first step, and the simultaneous release of the two electrons via ‘over the barrier ionization’ in the second step.

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Section: Introductionmentioning

confidence: 99%

Laser-induced nonsequential double ionization of helium: classical model calculations

Sarkadi

2020

J. Phys. B: At. Mol. Opt. Phys.

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“…Multiple rescattering processes also play an important role in HHG in an intense laser field [13-15]. In addition, multiplereturn-collision (MRC) trajectories have been explored in NSDI with linearly [16,17] or elliptically [18][19][20], polarized laser field in recent years, in which sub-cycle dynamics was investigated and Coulomb-potential effects was considered to play an indispensable role.…”

Section: Open Access Edited Bymentioning

confidence: 99%

Controlling electron recollision with combined linear and circular polarization

Ben

Han²,

Yang³

et al. 2022

Front. Phys.

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We theoretically investigate the non-sequential double ionization of Ar atoms in the combined fields of linearly polarized laser and circularly polarized laser through 3D semiclassical simulations. By partially overlapping the two time-delayed multicycle laser pulses, we construct an optical waveform whose polarization ellipticity increase slowly for consecutive optical cycles. This composite laser pulses with the time-dependent ellipticity can tunnel-ionize atoms and steer the first tunneling electron to recollision with the second bound electron through different trajectories, in which the recollision occurs with different return times of the first ionized electron. Through tuning delay time between the two laser pulses, the double ionization yields and recollision trajectories with different return times can be controlled. The time-dependent ellipticity with different delay time can enhance or suppress the probability of different return times. This work provides a scheme exploring electron dynamics in few optical cycle or even subcycle time scale in a multicycle laser field without having to be limited to near-single-cycle laser pulses.

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“…The knee structure has been simulated in numerical works, using classical ensemble [34][35][36][37][38], S-matrix [39,40] and numerical solution of 1D TDSE [41,42]. In this work, we present a full quantum mechanical approach for a He atom with two interacting electrons under the radiations of femtosecond laser pulses with various intensities.…”

Section: Introductionmentioning

confidence: 99%

High-order harmonic generation, attosecond pulse train, and non- sequential double ionization in the helium atom under high-intensity femtosecond laser pulses

Zakavi

Sabaeian

2023

Preprint

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High-order harmonic generation (HHG), attosecond pulse train (APT), and non-sequential double ionization (NSDI) in the He atom under high intense femtosecond laser pulses are calculated by time-dependent Schrodinger equation (TDSE) in one dimension (1D). By considering the mutual electron-electron and electron-nuclei interactions along with calculating the He atom ground state wave function by imaginary time propagation (ITP) method, besides calculating probability density of electrons, dipole acceleration, HHG, and APT, we could generate the well-known "knee structure" in the probability of the He atom ionization against the intensity in an ionization boundary condition model. The results are in good agreement with the experimental data reported by Walker et al. [B. Walker et al. Phys. Rev. Lett. 73, 1227 (1994)].

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Third-order S-matrix study of electron-electron correlation in nonsequential double ionization

Cited by 4 publications

References 29 publications

Laser-induced nonsequential double ionization of helium: classical model calculations

Laser-induced nonsequential double ionization of helium: classical model calculations

Controlling electron recollision with combined linear and circular polarization

High-order harmonic generation, attosecond pulse train, and non- sequential double ionization in the helium atom under high-intensity femtosecond laser pulses

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