Parameterized optimized effective potential for the ground state of the atoms He through Xe

Sarsa, A.; Gálvez, Francisco; Buendı́a, E.

doi:10.1016/j.adt.2004.07.003

Cited by 57 publications

(45 citation statements)

References 15 publications

(33 reference statements)

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“…To answer this question, we have solved the TDSE using a single-active electron (SAE) model with the field-free He atom described by an effective one-electron potential [43]. Full details of these simulations are presented elsewhere [44].…”

Section: Theory and Discussionmentioning

confidence: 99%

Angular dependence of photoemission time delay in helium

et al. 2016

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Time delays of electrons emitted from an isotropic initial state with the absorption of a single photon and leaving behind an isotropic ion are angle independent. Using an interferometric method involving XUV attosecond pulse trains and an IR-probe field in combination with a detection scheme, which allows for full three-dimensional momentum resolution, we show that measured time delays between electrons liberated from the 1s 2 spherically symmetric ground state of helium depend on the emission direction of the electrons relative to the common linear polarization axis of the ionizing XUV light and the IR-probing field. Such time delay anisotropy, for which we measure values as large as 60 as, is caused by the interplay between final quantum states with different symmetry and arises naturally whenever the photoionization process involves the exchange of more than one photon. With the support of accurate theoretical models, the angular dependence of the time delay is attributed to small phase differences that are induced in the laser-driven continuum transitions to the final states. Since most measurement techniques tracing attosecond electron dynamics involve the exchange of at least two photons, this is a general and significant effect that must be taken into account in all measurements of time delays involving photoionization processes.

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Section: Theory and Discussionmentioning

confidence: 99%

Angular dependence of photoemission time delay in helium

et al. 2016

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“…with r 12 = |r 1 − r 2 | and V 2 being the numerical-parameterized optimized effective potential [6,12], which describes the interaction of the incident electron with the electrons of the alkaline core, given by…”

Section: Theoretical Treatmentsmentioning

confidence: 99%

“…In this article, we present the determination of the TDCS of sodium using a parameterized optimized effective potential [6] for the alkaline core both in the determination of the bound state wave function of the target and in the interaction potential of the incoming electron with the target. The 3C wave function of Brauner et al [7] and dynamically screened 3C (DS3C) wave function presented by Berakdar and Briggs [8] are used in the final continuum state of the two electrons and the ion.…”

Section: Introductionmentioning

confidence: 99%

Effects of dynamical screening on single ionization of sodium by electron impact in doubly symmetric geometry

Jia

Sun

2011

Phys. Rev. A

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A dynamically screened three-Coulomb-wave model (DS3C) is applied to study the single ionization of sodium by electron impact. Triply differential cross sections (TDCS) are calculated in doubly symmetric geometry at excess energies of 6, 10, 15, 20, 30, 40, 50, and 60 eV. Comparisons are made among DS3C and the latest experimental data and such theoretical predictions as the three-Coulomb-wave function approach, the distorted-wave Born approximation, and the nonperturbative convergent close-coupling method. The angular distribution and relative magnitude of the present TDCS are found to qualitatively reproduce the reported experimental data. It is shown that dynamically screened effects are important in the geometries studied here.

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“…The model potentials forĤ atom for the Ne * and Ar atoms are effective one-electron potentials [123] . The laser pulse is modelled as a carrier wave inside a pulse envelope function.…”

Section: Temd Theorymentioning

confidence: 99%

Metastable noble gas atoms in strong-field ionization experiments

Calvert

Palmer

Litvinyuk

et al. 2016

High Pow Laser Sci Eng

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The interactions of strong-field few-cycle laser pulses with metastable states of noble gas atoms are examined. Metastable noble gas atoms offer a combination of low ionization potential and a relatively simple atomic structure, making them excellent targets for examining ionization dynamics in varying experimental conditions. A review of the current work performed on metastable noble gas atoms is presented.

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Parameterized optimized effective potential for the ground state of the atoms He through Xe

Cited by 57 publications

References 15 publications

Angular dependence of photoemission time delay in helium

Angular dependence of photoemission time delay in helium

Effects of dynamical screening on single ionization of sodium by electron impact in doubly symmetric geometry

Metastable noble gas atoms in strong-field ionization experiments

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