dorsal/arxiv
View SchemaMultiphoton ionization of xenon in the VUV regime
| Authors | Robin Santra, Chris H. Greene |
|---|---|
| Categories | |
| ArXiv ID | physics/0407010 |
| URL | https://arxiv.org/abs/physics/0407010 |
| DOI | 10.1103/PhysRevA.70.053401 |
Abstract
In a recent experiment at the VUV free-electron laser facility at DESY in Hamburg, the generation of multiply charged ions in a gas of atomic xenon was observed. This paper develops a theoretical description of multiphoton ionization of xenon and its ions. The numerical results lend support to the view that the experimental observation may be interpreted in terms of the nonlinear absorption of several VUV photons. The method rests on the Hartree-Fock-Slater independent-particle model. The multiphoton physics is treated within a Floquet scheme. The continuum problem of the photoelectron is solved using a complex absorbing potential. Rate equations for the ionic populations are integrated to take into account the temporal structure of the individual VUV laser pulses. The effect of the spatial profile of the free-electron laser beam on the distribution of xenon charge states is included. An Auger-type many-electron mechanism may play a role in the VUV multiphoton ionization of xenon ions.
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"abstract": "In a recent experiment at the VUV free-electron laser facility at DESY in\nHamburg, the generation of multiply charged ions in a gas of atomic xenon was\nobserved. This paper develops a theoretical description of multiphoton\nionization of xenon and its ions. The numerical results lend support to the\nview that the experimental observation may be interpreted in terms of the\nnonlinear absorption of several VUV photons. The method rests on the\nHartree-Fock-Slater independent-particle model. The multiphoton physics is\ntreated within a Floquet scheme. The continuum problem of the photoelectron is\nsolved using a complex absorbing potential. Rate equations for the ionic\npopulations are integrated to take into account the temporal structure of the\nindividual VUV laser pulses. The effect of the spatial profile of the\nfree-electron laser beam on the distribution of xenon charge states is\nincluded. An Auger-type many-electron mechanism may play a role in the VUV\nmultiphoton ionization of xenon ions.",
"arxiv_id": "physics/0407010",
"authors": [
"Robin Santra",
"Chris H. Greene"
],
"categories": [
"physics.atom-ph",
"physics.optics"
],
"doi": "10.1103/PhysRevA.70.053401",
"title": "Multiphoton ionization of xenon in the VUV regime",
"url": "https://arxiv.org/abs/physics/0407010"
},
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