dorsal/arxiv
View SchemaExtreme UV generation from molecules in intense Ti:Sapphire light
| Authors | J F McCann, Liang-You Peng, I D Williams, K T Taylor, D Dundas |
|---|---|
| Categories | |
| ArXiv ID | physics/0604117 |
| URL | https://arxiv.org/abs/physics/0604117 |
| Journal | Annual Report 2003/2004, Central Laser Facility, RAL (2004) 81 |
Abstract
We simulate the dynamics of H2+ and HD+ by direct solution of the time-dependent Schroedinger equation for the electronic and nuclear motion for the interaction of intense femtosecond pulses. On these timescales the rotational motion, even for such light molecules, is frozen. Therefore it is a reasonable assumption that the nuclear alignment is fixed during the pulse interaction and that rotation can be neglected. In terms of vibrational relaxation, and since the nuclei are light, vibration will be important over femtosecond timescales. Although homonuclear diatomics are IR-inactive, in an intense field one can create vibrational excitation through continuum coupling. To show the effect of vibration, consider a first approximation in which the nuclei are infinitely massive so they maintain their positions at a fixed bond length of R=2 a.u., throughout the process.
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"abstract": "We simulate the dynamics of H2+ and HD+ by direct solution of the\ntime-dependent Schroedinger equation for the electronic and nuclear motion for\nthe interaction of intense femtosecond pulses. On these timescales the\nrotational motion, even for such light molecules, is frozen. Therefore it is a\nreasonable assumption that the nuclear alignment is fixed during the pulse\ninteraction and that rotation can be neglected. In terms of vibrational\nrelaxation, and since the nuclei are light, vibration will be important over\nfemtosecond timescales. Although homonuclear diatomics are IR-inactive, in an\nintense field one can create vibrational excitation through continuum coupling.\nTo show the effect of vibration, consider a first approximation in which the\nnuclei are infinitely massive so they maintain their positions at a fixed bond\nlength of R=2 a.u., throughout the process.",
"arxiv_id": "physics/0604117",
"authors": [
"J F McCann",
"Liang-You Peng",
"I D Williams",
"K T Taylor",
"D Dundas"
],
"categories": [
"physics.atom-ph",
"physics.comp-ph"
],
"journal_ref": "Annual Report 2003/2004, Central Laser Facility, RAL (2004) 81",
"title": "Extreme UV generation from molecules in intense Ti:Sapphire light",
"url": "https://arxiv.org/abs/physics/0604117"
},
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