dorsal/arxiv
View SchemaTime-dependent calculation of ionization in Potassium at mid-infrared wavelengths
| Authors | P. Maragakis, E. Cormier, P. Lambropoulos |
|---|---|
| Categories | |
| ArXiv ID | physics/9904053 |
| URL | https://arxiv.org/abs/physics/9904053 |
| DOI | 10.1103/PhysRevA.60.4718 |
Abstract
We study the dynamics of the Potassium atom in the mid-infrared, high intensity, short laser pulse regime. We ascertain numerical convergence by comparing the results obtained by the direct expansion of the time-dependent Schroedinger equation onto B-Splines, to those obtained by the eigenbasis expansion method. We present ionization curves in the 12-, 13-, and 14-photon ionization range for Potassium. The ionization curve of a scaled system, namely Hydrogen starting from the 2s, is compared to the 12-photon results. In the 13-photon regime, a dynamic resonance is found and analyzed in some detail. The results for all wavelengths and intensities, including Hydrogen, display a clear plateau in the peak-heights of the low energy part of the Above Threshold Ionization (ATI) spectrum, which scales with the ponderomotive energy Up, and extends to 2.8 +- 0.5 Up.
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"abstract": "We study the dynamics of the Potassium atom in the mid-infrared, high\nintensity, short laser pulse regime. We ascertain numerical convergence by\ncomparing the results obtained by the direct expansion of the time-dependent\nSchroedinger equation onto B-Splines, to those obtained by the eigenbasis\nexpansion method. We present ionization curves in the 12-, 13-, and 14-photon\nionization range for Potassium. The ionization curve of a scaled system, namely\nHydrogen starting from the 2s, is compared to the 12-photon results. In the\n13-photon regime, a dynamic resonance is found and analyzed in some detail. The\nresults for all wavelengths and intensities, including Hydrogen, display a\nclear plateau in the peak-heights of the low energy part of the Above Threshold\nIonization (ATI) spectrum, which scales with the ponderomotive energy Up, and\nextends to 2.8 +- 0.5 Up.",
"arxiv_id": "physics/9904053",
"authors": [
"P. Maragakis",
"E. Cormier",
"P. Lambropoulos"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1103/PhysRevA.60.4718",
"title": "Time-dependent calculation of ionization in Potassium at mid-infrared wavelengths",
"url": "https://arxiv.org/abs/physics/9904053"
},
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