Three-photon detachment of electrons from the fluorine negative ion

Gribakin, G. F.; Ivanov, V. K.; Korol, Andrey V.; Kuchiev, M. Yu.

doi:10.1088/0953-4075/33/4/316

Cited by 7 publications

(2 citation statements)

References 22 publications

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“…The asymptotic form will be similar but with κ HF = 2|ε HOMO | substituted for κ with ε HOMO the eigenvalue of the oneelectron HF (Roothaan) equation. For the highly correlated F − ion, for example, the two different values of κ differ by 20% and the application of a wrong asymptotic wave function will introduce a large error when calculating the MO-SFA LG ionization rates [31]. For the systems considered here the largest difference between the experimental κ and κ HF is 10% for NO and less than 5% for the remaining systems.…”

Section: Ipmentioning

confidence: 93%

Strong-field ionization of diatomic molecules and companion atoms: Strong-field approximation and tunneling theory including nuclear motion

Kjeldsen

Madsen

2005

Phys. Rev. A

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We present a detailed comparison of strong-field ionization of diatomic molecules and their companion atoms with nearly equal ionization potentials. We perform calculations in the length and velocity gauge formulations of the molecular strong-field approximation and with the molecular tunneling theory, and in both cases we consider effects of nuclear motion. A comparison of our results with experimental data shows that the length gauge strong-field approximation gives the most reliable predictions.

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Section: Ipmentioning

confidence: 93%

Strong-field ionization of diatomic molecules and companion atoms: Strong-field approximation and tunneling theory including nuclear motion

Kjeldsen

Madsen

2005

Phys. Rev. A

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“…By contrast our initial-state wave function is asymptotically correct. It has been demonstrated in [29,30] that the use of asymptotically correct initial-state wave functions is very important for obtaining a correct description of above-threshold detachment in negative halide ions. Additionally, the results in Fig.…”

Section: B Photoelectron Momentum Distributions Mapsmentioning

confidence: 99%

Direct photodetachment of F−by mid-infrared few-cycle femtosecond laser pulses

Shearer¹,

Monteith²

2013

Phys. Rev. A

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The recent adiabatic saddle-point approach of Shearer et al. [Phys. Rev. A 84, 033409 (2011)] is extended to multiphoton detachment of negative ions with outer p-state electrons. This theory is applied to investigate the strong-field photodetachment dynamics of F − ions exposed to few-cycle femtosecond laser pulses, without taking into account the rescattering mechanism. Numerical calculations are considered for mid-infrared laser wavelengths of 1300 and 1800 nm at laser intensities of 7.7 × 10 12 , 1.1 × 10 13 , and 1.3 × 10 13 W/cm 2. Two-dimensional momenta saddle-point spectra exhibit a distinct distribution in the shape of a "smile" in the complex-time plane. Electron momentum distribution maps of direct electrons are investigated. These produce a distinct pattern of above-threshold detachment (ATD) concentric rings due to constructive and destructive quantum interference of electrons detached from their parent ions. Probability detachment distributions presented, capturing the influence of saturation effects that are found to become more significant with increasing laser intensity at a fixed wavelength. ATD photoangular distributions as functions of laser intensity and wavelength near channel closings are also investigated and found to be sensitive to initial-state symmetry. Nonmonotonic structures observed in the ejected photoelectron energy spectra are attributed to interference effects from coherent electronic wave packets. Additionally the profiles of all the photoelectron emission spectra show strong dependence on the carrier-envelope phase, indicating that it is a reliable parameter for characterizing the wave form of the pulse.

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Relativistic two-photon bremsstrahlung

Korol

Solovjev

2006

Radiation Physics and Chemistry

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Three-photon detachment of electrons from the fluorine negative ion

Cited by 7 publications

References 22 publications

Strong-field ionization of diatomic molecules and companion atoms: Strong-field approximation and tunneling theory including nuclear motion

Strong-field ionization of diatomic molecules and companion atoms: Strong-field approximation and tunneling theory including nuclear motion

Direct photodetachment of F−by mid-infrared few-cycle femtosecond laser pulses

Relativistic two-photon bremsstrahlung

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