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Optimal control with non-adiabatic Molecular Dynamics: application to the Coulomb explosion of Sodium clusters
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Optimal control with non-adiabatic Molecular Dynamics: application to the Coulomb explosion of Sodium clusters
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We present an implementation of optimal control theory for the first-principles non-adiabatic Ehrenfest Molecular Dynamics model, which describes a condensed matter system by considering classical point-particle nuclei, and quantum electrons, handled in our case with time-dependent density-functional theory. The scheme is demonstrated by optimizing the Coulomb explosion of small Sodium clusters: the algorithm is set to find the optimal femtosecond laser pulses that disintegrate the clusters, for a given total pulse duration, fluence, and cut-off frequency. We describe the numerical details and difficulties of the methodology.
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