Hindered Coulomb explosion of embedded Na clusters — stopping,shape dynamics and energy transport |
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Authors: | F Fehrer P M Dinh M Bär P-G Reinhard E Suraud |
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Institution: | 1.Institut für Theoretische Physik, Universit?t Erlangen,Erlangen,Germany;2.Laboratoire de Physique Théorique, Université P. Sabatier,Toulouse Cedex,France |
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Abstract: | We investigate the dynamical evolution of a Na8 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 Na8
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. |
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Keywords: | 36 40 Gk Plasma and collective effects in clusters 36 40 Mr Spectroscopy and geometrical structure of clusters 36 40 Sx Diffusion and dynamics of clusters 36 40 Vz Optical properties of clusters |
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