dorsal/arxiv
View SchemaElectron impact double ionization of helium from classical trajectory calculations
| Authors | Tihamer Geyer |
|---|---|
| Categories | |
| ArXiv ID | physics/0312008 |
| URL | https://arxiv.org/abs/physics/0312008 |
| DOI | 10.1088/0953-4075/37/6/007 |
Abstract
With a recently proposed quasiclassical ansatz [Geyer and Rost, J. Phys. B 35 (2002) 1479] it is possible to perform classical trajectory ionization calculations on many electron targets. The autoionization of the target is prevented by a M\o{}ller type backward--forward propagation scheme and allows to consider all interactions between all particles without additional stabilization. The application of the quasiclassical ansatz for helium targets is explained and total and partially differential cross sections for electron impact double ionization are calculated. In the high energy regime the classical description fails to describe the dominant TS1 process, which leads to big deviations, whereas for low energies the total cross section is reproduced well. Differential cross sections calculated at 250 eV await their experimental confirmation.
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"date_created": "2026-03-02T18:00:47.021000Z",
"date_modified": "2026-03-02T18:00:47.021000Z",
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"abstract": "With a recently proposed quasiclassical ansatz [Geyer and Rost, J. Phys. B 35\n(2002) 1479] it is possible to perform classical trajectory ionization\ncalculations on many electron targets. The autoionization of the target is\nprevented by a M\\o{}ller type backward--forward propagation scheme and allows\nto consider all interactions between all particles without additional\nstabilization. The application of the quasiclassical ansatz for helium targets\nis explained and total and partially differential cross sections for electron\nimpact double ionization are calculated. In the high energy regime the\nclassical description fails to describe the dominant TS1 process, which leads\nto big deviations, whereas for low energies the total cross section is\nreproduced well. Differential cross sections calculated at 250 eV await their\nexperimental confirmation.",
"arxiv_id": "physics/0312008",
"authors": [
"Tihamer Geyer"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1088/0953-4075/37/6/007",
"title": "Electron impact double ionization of helium from classical trajectory calculations",
"url": "https://arxiv.org/abs/physics/0312008"
},
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"type": "Model",
"variant": "snapshot-2026-03-01",
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