Geometric structure of ion-induced displacement cascades in solids |
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| Institution: | 1. Department of Electronic and Electrical Engineering, University of Surrey, Guildford, Surrey GU2 5XH, UK;2. Health and Safety Research Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6123, USA;1. Department of Physics, University of Tennessee, Knoxville, TN 37831-6123, USA;3. LCFCA, Department de Física Aplicada, Facultat de Ciències, Universitat d''Alacant, Apt. 99, E-03080 Alacant, Spain;4. Department of Physics, Naval Postgraduate School, Monterey, CA 9343, USA;5. Departamento de Física de la Materia Condensada, Facultad de Físicas, UAM, Cantoblanco, E-28049 Madrid, Spain;1. Lawrence Livermore National Laboratory, Livermore, CA 94550, United States;2. Department of Nuclear Engineering, Texas A&M University, College Station, TX 77843, United States;1. Lawrence Livermore National Laboratory, Livermore, CA 94550, USA;2. Department of Nuclear Engineering, Texas A&M University, College Station, TX 77843, USA |
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| Abstract: | The geometric structure of collision cascades developed in solids by energetic ion bombardment is investigated from the view-point of fractal geometry using computer simulated trajectories and defect distributions. The fractal dimension of a collision cascade, as extracted from defect distributions, depends on the effective interaction potential governing the sequence of events in a subcascade, as shown in recent analytical predictions. Possible implications and further work along these lines are suggested. |
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