Browsing by Author "Peschke, U."

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    Feasibility of fast-particle channeling in quasicrystals
    (1991) Kupke, Thomas; Peschke, U.; Carstanjen, Heinz-Dieter; Trebin, Hans-Rainer
    The feasibility of ion channeling in quasicrystalline structures is investigated in a computer experiment. For this purpose, a quasilattice is constructed by the grid method. As this model crystal shows, in a quasicrystal also the lattice points are arranged in strings and planes and form pronounced axial and planar channels. Their occupation by lattice points is, however, not constant, but exhibits a wide density distribution in contrast to periodic crystals. Manganese atoms were placed at the lattice points and backscattering yield profiles of 750-keV He+ ions were obtained in a channeling computer simulation. Pronounced channeling minima are observed in the profiles for axial as well as planar channeling.