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Molecular simulations of cluster ejection by CO2 cluster impact on carbon-based surfaces |
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| Authors: | Tomohiro Shinya Yasutaka Yamaguchi Hisato Yasumatsu Herbert M Urbassek |
| Affiliation: | a Department of Mechanical Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, Japan b Cluster Research Lab., Toyota Technological Institute: in East Tokyo Lab., Genesis Research Institute, Inc., 717-86 Futamata, Ichikawa 272-0001, Japan c Fachbereich Physik, Universität Kaiserslautern und Forschungszentrum OPTIMAS, P.O. Box 3049, Erwin-Schrödinger-Straße, 67663 Kaiserslautern, Germany d Institut für Mikrostrukturtechnik, Universität und Forschungszentrum Karlsruhe, P.O. Box 3640, 76021 Karlsruhe, Germany |
| Abstract: | Single (CO2)N (N = 1-20) cluster impact on three different carbon-based surfaces of fullerite (1 1 1), graphite and diamond (1 0 0) has been investigated by MD simulations with the cluster collision energy from 5 to 14 keV/cluster as a first step toward the general modeling of the reactive sputtering by cluster impact of a solid surface. A crater permanently remained on the fullerite and graphite surfaces while it was quickly replenished with fluidized carbon material on the diamond surface. In spite of the smaller crater size as well as the crater recovery resulting in the reduction of the surface area, the sputtering yields were the highest on diamond. The effective energy deposition near the surface contributes to the temperature rise and consequent sputtering seemed highly reduced due to the collision cascades especially on the fullerite target. |
| Keywords: | 79 20 Rf 79 20 AP 61 80 Lj |
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