Effect of multielectron polarization in the strong-field ionization of the oriented CO molecule

@article{Abusamha2019EffectOM,
  title={Effect of multielectron polarization in the strong-field ionization of the oriented CO molecule},
  author={Mahmoud Abu-samha and Lars Bojer Madsen},
  journal={Physical Review A},
  year={2019}
}
We discuss the mechanism by which the inclusion of multielectron polarization improves the solution of the time-dependent Schrodinger equation (TDSE) for the oriented CO molecule in a strong external laser pulse within the single-active-electron (SAE) approximation. A challenging problem of using the SAE approximation is that the active electron, instead of undergoing ionization, may be driven by the external field to lower-lying orbitals. For the oriented CO molecule, dipole coupling to the… 

Figures from this paper

Multielectron effects in strong-field ionization of the oriented OCS molecule

We present theoretical calculations of orientation-dependent total ionization yields from the highest occupied molecular orbitals of the oriented OCS molecule by solving the time-dependent

Analysis of the multielectron dynamics in intense laser-induced ionization of CO by the time-dependent effective potentials for natural orbitals

We simulated the multielectron dynamics of a CO molecule irradiated by near-IR λ = 760 nm two-cycle pulses with different carrier envelope phases by using the multiconfiguration time-dependent (TD)

Many-electron effects of strong-field ionization described in an exact one-electron theory

If one-electron observables of a many-electron system are of interest, a many-electron dynamics can be represented exactly by a one-electron dynamics with effective potentials. The formalism for this

Multiorbital effects on CO ionization by intense short laser pulses

Within time-dependent Hartree–Fock theory, we study the CO ionization for six different photon wavelengths running from 200 to 700 nm. The parallel and perpendicular alignments of the CO molecular

Study of high-order harmonic generation in xenon based on time-dependent density-functional theory

The high-order harmonic generation (HHG) in xenon is studied by using the time-dependent density-functional theory. The dynamics of all electrons on the outer 4th and 5th atomic shells is considered

All-electron, density-functional-based method for angle-resolved tunneling ionization in the adiabatic regime

We develop and test a method that integrates many-electron weak-field asymptotic theory (ME-WFAT) [Phys. Rev. A 89 , 013421 (2014)] in the integral representation (IR) into the density functional

Revealing and controlling nuclear dynamics following inner-shell photoionization of N2

In this work, we apply the Monte Carlo wave packet method to study the ultrafast nuclear dynamics following inner-shell photoionization of N2 exposed to an ultrashort intense X-ray pulse. The photon

Ab Initio Cluster Approach for High Harmonic Generation in Liquids

High harmonic generation (HHG) takes place in all phases of matter. In gaseous atomic and molecular media, it has been extensively studied and is very well understood. In solids, research is ongoing,

Multielectron effect in the strong-field ionization of aligned nonpolar molecules

We revisit strong-field ionization of aligned O 2 , CO 2 , and CS 2 molecules in light of recent advances in the field of strong-field physics, in particular the inclusion of multielectron polarization

References

SHOWING 1-10 OF 45 REFERENCES

Dynamic core polarization in strong-field ionization of CO molecules.

It is identified that the dynamic core polarization plays an important role in the strong-field tunneling ionization of CO molecules, which is helpful for the future development of the tunneling ionsization theory of molecules beyond the single active electron approximation.

Theory of tunneling ionization of molecules: Weak-field asymptotics including dipole effects

The formulation of the parabolic adiabatic expansion approach to the problem of ionization of atomic systems in a static electric field, originally developed for the axially symmetric case [Phys.

Strong-field ionization of polar molecules: Stark-shift-corrected strong-field approximation

We extend the molecular strong-field approximation for ionization, in the tunneling limit, to include systematically the linear and quadratic static Stark shifts of the ionizing molecular orbital.

Orientation-dependent strong-field dissociative single ionization of CO.

The dissociative ionization of CO in orthogonally polarized femtosecond laser pulses are studied in a pump-probe scheme and the dissociation of the created CO+ by the probe pulse can be fully disentangled by identifying the photoelectron momentum distributions.

Multielectron effects in strong field ionization of CO$_2$: impact on differential photoelectron spectra

We report fully differential photoelectron spectra from an {\it ab-inito} coupled channels treatment of CO$_2$. Photoionization by laser pulses centered at 400 nm and 800 nm wavelength are

Multielectron polarization effects in strong-field ionization: Narrowing of momentum distributions and imprints in interference structures

We extend the semiclassical two-step model [Phys. Rev. A 94, 013415 (2016)] to include a multielectron polarization-induced dipole potential. Using this model we investigate the imprints of

A single-electron picture based on the multiconfiguration time-dependent Hartree–Fock method: application to the anisotropic ionization and subsequent high-harmonic generation of the CO molecule

The mechanisms of anisotropic near-IR tunnel ionization and high-order harmonic generation (HHG) in a CO molecule are theoretically investigated by using the multiconfiguration time-dependent

High harmonic interferometry of multi-electron dynamics in molecules

These findings establish high harmonic interferometry as an effective approach to resolving multi-electron dynamics with sub-Ångström spatial resolution arising from the de Broglie wavelength of the recombining electron, and attosecond temporal resolution arisen from the timescale ofThe recombination event.

Photoionization of few electron systems: a hybrid coupled channels approach

We present the hybrid anti-symmetrized coupled channels method for the calculation of fully differential photo-electron spectra of multi-electron atoms and small molecules interacting with strong

Phase Structure of Strong-Field Tunneling Wave Packets from Molecules.

A molecular quantum-trajectory Monte Carlo model is presented to describe the laser-driven dynamics of photoelectron momentum distributions of molecules and it is shown that the ionizing molecular orbital has a critical effect on the initial phase of the tunneling wave packets.