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Interaction of MEV atomic ions with molecular solids: Ion track structure and sputtering phenomena |
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| Authors: | D D N B Daya P Demirev J Eriksson A Halln P Hkansson R E Johnson J Kopniczky R M Papalo C T Reimann J Rottler B U R Sundqvist |
| Institution: | 1 Department of Physics, University of Colombo, Colombo 3, Sri Lanka 2 Department of Radiation Sciences, Division of Ion Physics, Uppsala University, Box 535, S-751 21, Uppsala, Sweden 3 Department of Solid State Electronics, Royal Institute of Technology, Box E229, S-164 40, Kista, Sweden 4 Engineering Physics, Thornton Hall, University of Virginia, Charlottesville, Virginia 22903, United States 5 Institute of Physics, Federal University of Rio Grande do Sul, C.P. 15051, 91501-970, Porto Alegre, RS, Brazil |
| Abstract: | Recent results obtained in our research groups from studies of the interactions of swift, heavy atomic ions with molecular solids are concisely outlined. The focus is on material ejection (sputtering) and surface track formation. The experimental techniques employed include time-of-flight mass spectrometry, energy analysis, collection and analysis of sputtered material, and scanning force microscopy. Characteristics of the sputtering process probed include the sputtering yield, radial and axial velocity distributions, angular distributions, and surface track morphology. Besides reviewing and correlating experimental results, we also emphasize the common quasi-thermal origin of pressure-pulse/hydrodynamic and evaporative spike sputtering models. |
| Keywords: | Sputtering cratering surface modifications surface tracks swift heavy atomic ions scanning force microscopy thermal spike pressure pulse shock wave radial velocity distributions collector experiments |
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