dorsal/arxiv
View SchemaElectron excitation and 'cascade' ionisation of diatomic molecules with ultra-short pulses of strong IR lasers
| Authors | A. I. Pegarkov |
|---|---|
| Categories | |
| ArXiv ID | physics/0202004 |
| URL | https://arxiv.org/abs/physics/0202004 |
| DOI | 10.1016/S0009-2614(01)00763-1 |
| Journal | Chem. Phys. Lett. V. 343, 642-648 (2001) |
Abstract
The dynamics of molecular electron excitation and ionisation is studied in real-time for ultra-short IR laser pulses of intensity I>10^{13} W/cm^{2}. The multi-electron molecule is modeled by a system of two active electrons moving in a field of frozen core. The time dependences of electron probability, electron energy, and one-electron/two-electron ionisation probability are calculated for example of the N$_{2}$ molecule and the laser pulse with \lambda=800 nm, \tau=5 fs. The electron dynamics of the pulse - excited molecule is considered also after the pulse end. The results show that in the strong IR pulses of I\ge 10^{16} W/cm^{2} the molecule undergoes a 'cascade' ionisation, where the one electron is emitted with the same probability as a pair of electrons.
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"abstract": "The dynamics of molecular electron excitation and ionisation is studied in\nreal-time for ultra-short IR laser pulses of intensity I\u003e10^{13} W/cm^{2}. The\nmulti-electron molecule is modeled by a system of two active electrons moving\nin a field of frozen core. The time dependences of electron probability,\nelectron energy, and one-electron/two-electron ionisation probability are\ncalculated for example of the N$_{2}$ molecule and the laser pulse with\n\\lambda=800 nm, \\tau=5 fs. The electron dynamics of the pulse - excited\nmolecule is considered also after the pulse end. The results show that in the\nstrong IR pulses of I\\ge 10^{16} W/cm^{2} the molecule undergoes a \u0027cascade\u0027\nionisation, where the one electron is emitted with the same probability as a\npair of electrons.",
"arxiv_id": "physics/0202004",
"authors": [
"A. I. Pegarkov"
],
"categories": [
"physics.optics",
"physics.chem-ph"
],
"doi": "10.1016/S0009-2614(01)00763-1",
"journal_ref": "Chem. Phys. Lett. V. 343, 642-648 (2001)",
"title": "Electron excitation and \u0027cascade\u0027 ionisation of diatomic molecules with ultra-short pulses of strong IR lasers",
"url": "https://arxiv.org/abs/physics/0202004"
},
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