dorsal/arxiv
View SchemaElectron angular distributions in the two--photon ionization of hydrogen--like ions: relativistic description
| Authors | Peter Koval, Stephan Fritzsche, Andrey Surzhykov |
|---|---|
| Categories | |
| ArXiv ID | physics/0312111 |
| URL | https://arxiv.org/abs/physics/0312111 |
| DOI | 10.1088/0953-4075/37/2/006 |
| Journal | Peter Koval, Stephan Fritzsche and Andrey Surzhykov 2004 Electron angular distributions in the two-photon ionization of hydrogen-like ions: a relativistic description \textit{J. Phys. B} \textbf{37} 375-388 |
Abstract
The angular distribution of the emitted electrons, following the two--photon ionization of the hydrogen--like ions, is studied within the framework of second order perturbation theory \textit{and} the Dirac equation. Using a density matrix approach, we have investigated the effects which arise from the polarization of the incoming light as well as from the higher multipoles in the expansion of the electron--photon interaction. For medium-- and high--Z ions, in particular, the non--dipole contributions give rise to a significant change in the angular distribution of the emitted electrons, if compared with the electric--dipole approximation. This includes a strong forward emission while, in dipole approximation, the electron emission always occurs symmetric with respect to the plane which is perpendicular to the photon beam. Detailed computations for the dependence of the photoelectron angular distributions on the polarization of the incident light are carried out for the ionization of the H, Xe$^{53+}$ and U$^{91+}$ (hydrogen--like) ions.
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"abstract": "The angular distribution of the emitted electrons, following the two--photon\nionization of the hydrogen--like ions, is studied within the framework of\nsecond order perturbation theory \\textit{and} the Dirac equation. Using a\ndensity matrix approach, we have investigated the effects which arise from the\npolarization of the incoming light as well as from the higher multipoles in the\nexpansion of the electron--photon interaction. For medium-- and high--Z ions,\nin particular, the non--dipole contributions give rise to a significant change\nin the angular distribution of the emitted electrons, if compared with the\nelectric--dipole approximation. This includes a strong forward emission while,\nin dipole approximation, the electron emission always occurs symmetric with\nrespect to the plane which is perpendicular to the photon beam. Detailed\ncomputations for the dependence of the photoelectron angular distributions on\nthe polarization of the incident light are carried out for the ionization of\nthe H, Xe$^{53+}$ and U$^{91+}$ (hydrogen--like) ions.",
"arxiv_id": "physics/0312111",
"authors": [
"Peter Koval",
"Stephan Fritzsche",
"Andrey Surzhykov"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1088/0953-4075/37/2/006",
"journal_ref": "Peter Koval, Stephan Fritzsche and Andrey Surzhykov 2004 Electron\n angular distributions in the two-photon ionization of hydrogen-like ions: a\n relativistic description \\textit{J. Phys. B} \\textbf{37} 375-388",
"title": "Electron angular distributions in the two--photon ionization of hydrogen--like ions: relativistic description",
"url": "https://arxiv.org/abs/physics/0312111"
},
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