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The conditions for total reflection of low-energy atoms from crystal surfaces

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Abstract

The critical angles for the total reflection of low-energy particles from Cu<100> rows and {001} planes have been investigated, using the binary collision approximation computer simulation code MARLOWE. Breakthrough angles were evaluated for H, N, Ne, Ar, Cu, Xe, and Au in the energy range from 0.1 to 7.5 keV. In both the axial and the planar cases, recoiling of the target atoms lowers the energy barrier which the target surface presents to the heavy projectiles. Consequently, the breakthrough angles are reduced for heavy projectiles below the values expected either from observations on light projectiles or from analytical channeling theory.

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Authors and Affiliations

  1. Université Libre de Bruxelles, B-1050, Bruxelles, Belgium

    M. Hou

  2. Oak Ridge National Laboratory, 37830, Oak Ridge, Tennessee, USA

    M. T. Robinson

Authors
  1. M. Hou
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  2. M. T. Robinson
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Research sponsored in part by the Division of Materials Sciences, U.S. Department of Energy under contract W-7405-eng-26 with the Union Carbide Corporation.

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Hou, M., Robinson, M.T. The conditions for total reflection of low-energy atoms from crystal surfaces. Appl. Phys. 17, 371–375 (1978). https://doi.org/10.1007/BF00886208

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  • DOI: https://doi.org/10.1007/BF00886208

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