Transition from strong-field sequential to nonsequential double ionization at near-infrared wavelengths and low intensities
Sign Up to like & getrecommendations! Published in 2018 at "Optical and Quantum Electronics"
DOI: 10.1007/s11082-018-1620-z
Abstract: Within a quantum-mechanical model, we investigate strong-field double ionization of a model helium atom by near-infrared, linearly polarized laser pulses at intensities far below the recollision threshold. The quantum simulations show a clear mechanism change… read more here.
Keywords: strong field; sequential nonsequential; near infrared; double ionization ... See more keywords
Recollision induced excitation-ionization with counter-rotating two-color circularly polarized laser field
Sign Up to like & getrecommendations! Published in 2017 at "Chemical Physics Letters"
DOI: 10.1016/j.cplett.2017.04.076
Abstract: Abstract Nonsequential double ionization of Ar by a counter-rotating two-color circularly polarized laser field is theoretically investigated. At the combined intensity in the “knee” structure range, the double ionization occurs mainly through recollision induced excitation… read more here.
Keywords: ionization counter; laser; rotating two; ionization ... See more keywords
Two-dimensional electron returning trajectory in nonsequential double ionization by strong-field circularly polarized laser pulses
Sign Up to like & getrecommendations! Published in 2021 at "Optics Communications"
DOI: 10.1016/j.optcom.2021.127080
Abstract: Abstract We investigate the features of electron returning trajectories in recollision-induced nonsequential double ionization by intense circularly polarized laser pulses within a classical ensemble model. We find typical two-dimensional returning trajectories of the first ionized… read more here.
Keywords: polarized laser; electron returning; nonsequential double; circularly polarized ... See more keywords
Control of electron recollision and molecular nonsequential double ionization
Sign Up to like & getrecommendations! Published in 2020 at "Communications Physics"
DOI: 10.1038/s42005-020-0297-3
Abstract: Intense laser pulses lasting a few optical cycles, are able to ionize molecules via different mechanisms. One such mechanism involves a process whereby within one optical period an electron tunnels away from the molecule, and… read more here.
Keywords: electron recollision; laser; control; recollision ... See more keywords
Double Ionization to CO 2 Produces Molecular Oxygen: A Roaming Mechanism
Sign Up to like & getrecommendations! Published in 2025 at "Chinese Physics Letters"
DOI: 10.1088/0256-307x/43/1/010301
Abstract: Abiotic oxygen formation predates photosynthesis, sustaining early chemical evolution, yet its elementary mechanisms remain contested. Here, we show the production pathways for molecular oxygen from doubly ionized carbon dioxide upon electron-impact. Through fragment ions and… read more here.
Keywords: oxygen; energy; double ionization; mechanism ... See more keywords
Simultaneous double ionization of C60 molecules in single-cycle pulses
Sign Up to like & getrecommendations! Published in 2021 at "New Journal of Physics"
DOI: 10.1088/1367-2630/abddf6
Abstract: We theoretically investigate simultaneous double ionization of C60 Buckminsterfullerene clusters within the strong field approximation, taking into account two-body effects like Coulomb blocking. Our analysis suggests that for infrared single-cycle pulses, simultaneous double ionization becomes… read more here.
Keywords: ionization c60; single cycle; cycle pulses; double ionization ... See more keywords
Pathways modulation of atomic non-sequential double ionization via few-cycle counter-rotating two-color laser fields
Sign Up to like & getrecommendations! Published in 2025 at "Physica Scripta"
DOI: 10.1088/1402-4896/ae03f5
Abstract: We analyze ultrafast electron correlation effects in non-sequential double ionization (NSDI) of argon atoms induced by few-cycle counter-rotating two-color circularly polarized (TCCP) laser pulses, employing the three-dimensional classical ensemble model (CEM). Our results demonstrate that… read more here.
Keywords: counter rotating; double ionization; sequential double; ionization ... See more keywords
Multiple recollisions in nonsequential double ionization below the recollision-ionization threshold
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Physics B"
DOI: 10.1088/1674-1056/ac2d1e
Abstract: By using the three-dimensional classical ensemble model, the recollision dynamics in nonsequential double ionization (NSDI) of Ar by 780-nm laser pulses at (6–1.2) ×1014 W/cm2 was extensively studied. We revealed the picture of multiple-recollision in… read more here.
Keywords: nonsequential double; recollision; ionization; recollision ionization ... See more keywords
Below-threshold nonsequential double ionization with linearly polarized two-color fields. I. Symmetry and dominance
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review A"
DOI: 10.1103/b6b3-mt29
Abstract: We investigate laser-induced nonsequential double ionization with linearly polarized bichromatic fields, focusing on the recollision-excitation with subsequent ionization (RESI) mechanism. Using the strong-field approximation, we assess how the symmetries of the field influence the dominant… read more here.
Keywords: nonsequential double; field; linearly polarized; double ionization ... See more keywords
Below-threshold nonsequential double ionization with linearly polarized two-color fields. II. Quantum interference
Sign Up to like & getrecommendations! Published in 2025 at "Physical Review A"
DOI: 10.1103/g5wr-2gbz
Abstract: We perform a systematic analysis of intrachannel quantum interference in laser-induced nonsequential double ionization with linearly polarized bichromatic fields, focusing on the recollision-excitation with subsequent ionization (RESI) mechanism and employing the strong-field approximation. We generalize… read more here.
Keywords: nonsequential double; double ionization; ionization linearly; ionization ... See more keywords
Double ionization of a three-electron atom: Spin correlation effects
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.100.063408
Abstract: We study the effects of spin degrees of freedom and wave function symmetries on double ionization in three-electron systems. Each electron is assigned one spatial degree of freedom, and the resulting three-dimensional Schrodinger equation is… read more here.
Keywords: ionization three; ionization; three electron; electron atom ... See more keywords