dorsal/arxiv
View SchemaThe Coulomb four-body problem in a classical framework: Triple photoionization of lithium
| Authors | Agapi Emmanouilidou, Jan M. Rost |
|---|---|
| Categories | |
| ArXiv ID | physics/0605082 |
| URL | https://arxiv.org/abs/physics/0605082 |
| DOI | 10.1088/0953-4075/39/20/003 |
Abstract
Formulating a quasiclassical approach we determine the cross section for the complete four-body break-up of the lithium ground state following single photon absorption from threshold up to 220 eV excess energy. In addition, we develop a new classification scheme for three-electron ionizing trajectories in terms of electron-electron collisions, thereby identifying two main ionization paths which the three electrons in the ground state of lithium follow to escape to the continuum. The dominant escape paths manifest themselves in a characteristic ``T-shape'' break-up pattern of the three electrons which implies observable structures in the electronic angular correlation probability. This break-up pattern prevails for excess energies so low that the Wannier threshold law $\sigma\propto E^{\alpha}$ describes already the triple ionization cross section, whose predicted value $\alpha=2.16$ we can confirm quantitatively.
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"abstract": "Formulating a quasiclassical approach we determine the cross section for the\ncomplete four-body break-up of the lithium ground state following single photon\nabsorption from threshold up to 220 eV excess energy. In addition, we develop a\nnew classification scheme for three-electron ionizing trajectories in terms of\nelectron-electron collisions, thereby identifying two main ionization paths\nwhich the three electrons in the ground state of lithium follow to escape to\nthe continuum. The dominant escape paths manifest themselves in a\ncharacteristic ``T-shape\u0027\u0027 break-up pattern of the three electrons which\nimplies observable structures in the electronic angular correlation\nprobability. This break-up pattern prevails for excess energies so low that the\nWannier threshold law $\\sigma\\propto E^{\\alpha}$ describes already the triple\nionization cross section, whose predicted value $\\alpha=2.16$ we can confirm\nquantitatively.",
"arxiv_id": "physics/0605082",
"authors": [
"Agapi Emmanouilidou",
"Jan M. Rost"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1088/0953-4075/39/20/003",
"title": "The Coulomb four-body problem in a classical framework: Triple photoionization of lithium",
"url": "https://arxiv.org/abs/physics/0605082"
},
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