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
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
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
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
Near-threshold two-photon double ionization of Kr in the vacuum ultraviolet
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review A"
DOI: 10.1103/physreva.103.022832
Abstract: We report angle-resolved measurements on photoelectrons emitted upon near-threshold two-photon double ionization (TPDI) of Kr irradiated by free-electron laser (FEL) pulses. These photoelectron angular distributions (PADs) are compared with the results of semirelativistic $R$-matrix calculations.… read more here.
Keywords: two photon; double ionization; near threshold; threshold two ... See more keywords
Dissociation dynamics of the water dication following one-photon double ionization. II. Experiment
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review A"
DOI: 10.1103/physreva.98.053430
Abstract: Author(s): Reedy, D; Williams, JB; Gaire, B; Gatton, A; Weller, M; Menssen, A; Bauer, T; Henrichs, K; Burzynski, P; Berry, B; Streeter, ZL; Sartor, J; Ben-Itzhak, I; Jahnke, T; Dorner, R; Weber, T; Landers, AL… read more here.
Keywords: dissociation; dication; double ionization; photon double ... See more keywords
Polarization tagging of two-photon double ionization by elliptically polarized XUV pulses
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.99.023413
Abstract: This work was supported by the WWTF through Project No. MA14-002, and the FWF through Projects No. FWF-SFB041-VICOM, No. FWF-SFB049-NEXTlite, and No. FWF-W1243-Solids4Fun, as well as the IMPRS-APS. J.F. acknowledges support by the Spanish MINECO… read more here.
Keywords: two photon; ionization elliptically; polarization tagging; tagging two ... See more keywords
Separating Dipole and Quadrupole Contributions to Single-Photon Double Ionization.
Sign Up to like & getrecommendations! Published in 2018 at "Physical review letters"
DOI: 10.1103/physrevlett.121.173003
Abstract: We report on a kinematically complete measurement of double ionization of helium by a single 1100 eV circularly polarized photon. By exploiting dipole selection rules in the two-electron continuum state, we observed the angular emission pattern… read more here.
Keywords: photon; double ionization; quadrupole contributions; dipole quadrupole ... See more keywords