Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2007-06-18
Euro. Phys. J. D 45 (2007) 447
Physics
Condensed Matter
Other Condensed Matter
12 pages, 10 figures, accepted in Euro. Phys. J. D
Scientific paper
10.1140/epjd/e2007-00209-3
We investigate the dynamical evolution of a Na$_8$ cluster embedded in Ar matrices of various sizes from N=30 to 1048. The system is excited by an intense short laser pulse leading to high ionization stages. We analyze the subsequent highly non-linear motion of cluster and Ar environment in terms of trajectories, shapes, and energy flow. The most prominent effects are: temporary stabilization of high charge states for several ps, sudden stopping of the Coulomb explosion of the embedded Na$_8$ clusters associated with an extremely fast energy transfer to the Ar matrix, fast distribution of energy throughout the Ar layers by a sound wave. Other ionic-atomic transfer and relaxation processes proceed at slower scale of few ps. The electron cloud is almost thermally decoupled from ions and thermalizes far beyond the ps scale.
Baer Michael
Dinh Phuong Mai
Fehrer F.
Reinhard Paul-Gerhard
Suraud E.
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