Soviet Physics Journal

, Volume 22, Issue 3, pp 295–299 | Cite as

Surface channeling of protons and electrons on reflection by a single crystal

  • A. M. Taratin
  • S. A. Vorob'ev
Article
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Abstract

Computer modeling is used to investigate the reflection of 0.67-MeV protons and 1-MeV electrons by the (110) face of an Au single crystal for angles of divergence ψ < ψcr of the incident beam with the direction 〈110〉 lying in the surface. The angular distributions and reflection coefficients of protons and electrons are compared. Several maxima are found in the angular distributions. In additon to the specular-reflection maximum at θ=ψ there is a maximum at θ > ψ for protons and a maximum at θ < ψ for electrons. The maxima in the angular distributions are attributed to multiple scattering at atomic chains of the crystal surface. An analytic approximation of the reflection coefficient for protons Kcor(ψ) is given. The great contribution to the reflected flux from particles channeled in the surface layer allows it to be used for structural analysis of crystal surfaces.

Keywords

Reflection Surface Layer Structural Analysis Computer Modeling Angular Distribution 

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Literature cited

  1. 1.
    N. N. Petrov and I. A. Abroyan, Surface Diagnostics Using Ion Beams [in Russian], Leningr. Gos. Univ., Leningrad (1977).Google Scholar
  2. 2.
    O. B. Firsov, Abstracts of Material of an All-Union Conference on Surface Diagnostics by Ion Beams [in Russian], UGU, Uzherod (1977), p. 86.Google Scholar
  3. 3.
    V. E. Yurasova and D. S. Karpuzov, Fiz. Tverd. Tela,9, 2508 (1967); D. S. Karpuzov and V. I. Shul'ga, Izv. Akad. Nauk SSSR, Ser. Fiz.,33, 819 (1969).Google Scholar
  4. 4.
    E. S. Mashkova, V. A. Molchanov, and Yu. G. Skripka, Dokl. Akad. Nauk SSSR,198, 809 (1971); E. S. Mashkova and V. A. Molchanov, J. Appl. Phys.,47, No. 6, 2350 (1976).Google Scholar
  5. 5.
    A. A. Mukhamedov, É. S. Parilis, N. Yu. Turaev, and F. F. Umarov, Izv. Akad. Nauk SSSR, Ser. Fiz.,40, 2533 (1976).Google Scholar
  6. 6.
    F. Sizmann and C. Varelas, Nucl. Instum. Meth.,132, 633 (1976).Google Scholar
  7. 7.
    I. Lindhardt, Usp. Fiz. Nauk,99, 259 (1969).Google Scholar
  8. 8.
    V. V. Kudrin, Yu. A. Timishnikov, and S. A. Vorobiev (Vorob'ev), Phys. Status Solidi,58B, 49 (1973); S. A. Vorob'ev, V. V. Kudrin, and A. M. Taratin, Paper No. 1384 deposited at VINITI (1976).Google Scholar
  9. 9.
    G. A. Iferov, A. G. Kadmenskii, and A. F. Tulinov, Proceedings of the Third All-Union Conference on the Physics of Charged-Particle Interaction with Single Crystals [in Russian], Mosk. Gos. Univ., Moscow (1972), p. 24.Google Scholar
  10. 10.
    V. V. Kudrin and S. A. Vorobiev (Vorob'ev), Radiat. Eff.,21, 145 (1974).Google Scholar

Copyright information

© Plenum Publishing Corporation 1979

Authors and Affiliations

  • A. M. Taratin
    • 1
    • 2
  • S. A. Vorob'ev
    • 1
    • 2
  1. 1.Scientific-Research Institute of Nuclear PhysicsUSSR
  2. 2.S. M. Kirov Tomsk Polytechnical InstituteUSSR

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