2010
DOI: 10.1103/physreva.82.053414
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Potential barrier effects in two-photon ionization processes

Abstract: Potential barriers in the effective radial potential experienced by a photoexcited electron are shown to result in dramatic, resonancelike effects in two-photon ionization processes. In a two-photon ionization process, such potential barriers may affect not only the final state of the electron (as in ordinary photoionization), but also the intermediate-state electron wave packet corresponding to the absorption of one photon. We illustrate these effects for the generalized two-photon cross sections for ionizati… Show more

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Cited by 18 publications
(21 citation statements)
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“…Therefore, even without many-body effects, the electron excited from the different 4d ±m orbitals experiences different potentials owing to the shape of the nonspherical ionic core. This qualitative effect, although small, clearly exemplifies the impact of the ionic structure beyond the description of a simple spherically symmetric potential (e.g., the Herman-Skillman [78] or HF [45] potentials) or even an angular-momentum-dependent pseudopotential [79] widely used to model multielectron atoms in perturbative [3,80] or nonperturbative [81][82][83] light fields.…”
Section: B Time-independent Approach To Xe Gdr: Ses Methodsmentioning
confidence: 99%
“…Therefore, even without many-body effects, the electron excited from the different 4d ±m orbitals experiences different potentials owing to the shape of the nonspherical ionic core. This qualitative effect, although small, clearly exemplifies the impact of the ionic structure beyond the description of a simple spherically symmetric potential (e.g., the Herman-Skillman [78] or HF [45] potentials) or even an angular-momentum-dependent pseudopotential [79] widely used to model multielectron atoms in perturbative [3,80] or nonperturbative [81][82][83] light fields.…”
Section: B Time-independent Approach To Xe Gdr: Ses Methodsmentioning
confidence: 99%
“…Xenon is a model system for collective inner-shell electron dynamics involving a giant dipole resonance [4]. These dynamics in xenon turned out to be much richer than expected and have been the subject of numerous studies [5,6]. In particular, recent studies revealed that the giant 4d-εf dipole resonance in xenon is in fact composed of two short-lived resonances [7,8].…”
Section: Introductionmentioning
confidence: 99%
“…Yet, all these observations can be well understood, as far as collectiveness is concerned, in terms of the 1-photon absorption cross-sections of the various charge states of xenon131721, that is, in terms of the spectral characteristics of its linear response.…”
mentioning
confidence: 99%