Dynamics of cluster deposition on Ar surface
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Using a combined quantum mechanical/classical method, we study the dynamics of deposition of small Na clusters on Ar(001) surface. We work out basic mechanisms by systematic variation of substrate activity, impact energy, cluster orientations, cluster sizes, and charges. The soft Ar material is found to serve as an extremely efficient shock absorber which provides cluster capture in a broad range of impact energies. Reflection is only observed in combination with destruction of the substrate. The kinetic energy of the impinging cluster is rapidly transfered at first impact. The distribution of the collision energy over the substrate proceeds very fast with velocity of sound. The full thermalization of ionic and atomic energies goes at a much slower pace with times of several ps. Charged clusters are found to have a much stronger interface interaction and thus get in significantly closer contact with the surface.
PACS.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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- H. Brune, Metal Clusters at Surfaces, Structures (Springer, Berlin, 2000), p. 67 Google Scholar
- Eur. Phys. J. D 9 (1999), proceedings of ISSPIC 9, Lausanne 1998 Google Scholar
- Eur. Phys. J. D 16 (2001), proceedings of ISSPIC 10, Atlanta 2000 Google Scholar
- Eur. Phys. J. D 24 (2003), proceedings of ISSPIC 11, Strasbourg 2002 Google Scholar
- Eur. Phys. J. D 34 (2005), proceedings of ISSPIC 12, Nanjing 2004 Google Scholar
- W. Harbich, Metal Clusters at Surfaces, Structures (Springer, Berlin, 2000), p. 107 Google Scholar
- C. Kuhrt, M. Harsdorff, Surf. Sci. 245, 252 (1995) Google Scholar
- F. Fehrer, Ph.D. thesis, Universität Erlangen/Nürnberg (2006) Google Scholar
- P.G. Reinhard, E. Suraud, Introduction to Cluster Dynamics (Wiley, New York, 2003) Google Scholar
- P.M. Dinh, F. Fehrer, G. Bousquet, P.G. Reinhard, E. Suraud (2007), preprint Google Scholar