dorsal/arxiv
View SchemaHigh-order above-threshold ionization: the uniform approximation and the effect of the binding potential
| Authors | C. Figueira de Morisson Faria, H. Schomerus, W. Becker |
|---|---|
| Categories | |
| ArXiv ID | physics/0206028 |
| URL | https://arxiv.org/abs/physics/0206028 |
| DOI | 10.1103/PhysRevA.66.043413 |
| Journal | Phys. Rev. A 66, 043413 (2002) |
Abstract
A versatile semiclassical approximation for intense laser-atom processes is presented. This uniform approximation is no more complicated than the frequently-used multi-dimensional saddle-point approximation and far superior, since it applies for all energies, both close to as well as away from classical cutoffs. In the latter case, it reduces to the standard saddle-point approximation. The uniform approximation agrees accurately with numerical evaluations for potentials, for which these are feasible, and constitutes a practicable method of calculation in general. The method is applied to the calculation of high-order above-threshold ionization spectra with various binding potentials: Coulomb, Yukawa, and shell potentials which may model C$_{60}$ molecules or clusters. The shell potentials generate high-order ATI spectra that are more structured and may feature an apparently higher cutoff.
{
"annotation_id": "06a303ed-dea0-4c75-aed6-d8cfbc1aed8f",
"date_created": "2026-03-02T18:00:39.868000Z",
"date_modified": "2026-03-02T18:00:39.868000Z",
"file_hash": "99fa266c336132f8bdc5201b2c840da3992b1e339ea4546098a09e6b69ed2d87",
"private": false,
"record": {
"abstract": "A versatile semiclassical approximation for intense laser-atom processes is\npresented.\n This uniform approximation is no more complicated than the frequently-used\nmulti-dimensional saddle-point approximation and far superior, since it applies\nfor all energies, both close to as well as away from classical cutoffs. In the\nlatter case, it reduces to the standard saddle-point approximation. The uniform\napproximation agrees accurately with numerical evaluations for potentials, for\nwhich these are feasible, and constitutes a practicable method of calculation\nin general. The method is applied to the calculation of high-order\nabove-threshold ionization spectra with various binding potentials: Coulomb,\nYukawa, and shell potentials which may model C$_{60}$ molecules or clusters.\nThe shell potentials generate high-order ATI spectra that are more structured\nand may feature an apparently higher cutoff.",
"arxiv_id": "physics/0206028",
"authors": [
"C. Figueira de Morisson Faria",
"H. Schomerus",
"W. Becker"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1103/PhysRevA.66.043413",
"journal_ref": "Phys. Rev. A 66, 043413 (2002)",
"title": "High-order above-threshold ionization: the uniform approximation and the effect of the binding potential",
"url": "https://arxiv.org/abs/physics/0206028"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "29bfeb0d-b7f5-4752-8b0c-a26e2034260e",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}