DFT studies of ethylene in femtosecond laser pulses

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Using time-dependent density functional theory, applied to valence electrons, coupled non-adiabatically to molecular dynamics of the ions, we study the induced dynamics of ethylene subjected to the laser field. We demonstrate the reliable quality of such an approach in comparison to the experimental data on atomic and molecular properties. The impact of ionic motion on the ionization is discussed showing the importance of dealing with electronic and ionic degrees of freedom simultaneously. We explore the various excitation scenarios of ethylene as a function of the laser parameters. We find that the Coulomb fragmentation depends sensitively on the laser frequency. The high laser intensity can cause brute-force Coulomb explosion and the laser pulse length actually has influence on the excitation dynamics of ethylene.
14 pages, 5 figures

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Atomic and Molecular Clusters, Computational Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/225163

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0903.5246
 http://arxiv.org/abs/0903.5246

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arXiv