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Physical Review B
Volumn 43, Issue 18, 1991, Pages 14423-14433
Scattered-wave integral-transform method of holographic-image reconstruction from forward-scattering diffraction patterns
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Indexed keywords

EID: 0000831162     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevB.43.14423     Document Type: Article
Times cited : (109)
References (35)
  • 4
    • 84927297171 scopus 로고    scopus 로고
    • Z.-L. Han, S. Hardcastle, G. R. Harp, H. Li, X.-D. Wang, J. Zhang and B. P. Tonner, Surf. Sci. (to be published).
  • 8
    • 84927297168 scopus 로고    scopus 로고
    • The intensity precisely at the origin is identically zero, since we normalize the diffraction pattern to tint χ ( k vec ) d k hatxd k haty= 0. However, this leads to an apparent ``peak'' near the origin from the incompletely removed reference wave (see Fig. 5).
  • 11
    • 84927297166 scopus 로고    scopus 로고
    • B. P. Tonner and Z.-L. Han (unpublished).
  • 16
    • 84927297165 scopus 로고    scopus 로고
    • S. A. Chambers in Advances in Physics, edited by S. Doniach (Taylor and Francis, London, 1991).
  • 18
    • 84927297163 scopus 로고    scopus 로고
    • There are two conditions under which the extension of the Fourier integral (1) to include the angular space ``inside'' the crystal may be approximately allowed. At high kinetic energy, the forward-scattering effect limits the angular range of the diffraction pattern, so that for bond directions well removed from the surface, is possible to set χ ( k bhat ) = 0 inside the crystal. In other special cases, the emitted atom and near neighbors may have a plane of symmetry or an inversion symmetry, so that the anisotropy inside the crystal can be de- rived from the measured diffraction pattern by χ ( kx, ky, - kz) = χ ( kx, ky, kz) or from χ ( kx, ky, - kz) = χ ( - kx, - ky, kz).
  • 23
    • 84927297162 scopus 로고    scopus 로고
    • The sign convention used for the Fourier transform in Eq. (1) and elsewhere in this paper is chosen to make the direct holographic image result from terms proportional to the atomic scattering factor, rather than its complex conjugate. The opposite convention (see, for example, Refs. 9 and 23) results from the interpretation of the transform as a resulting from an application of the Helmholtz-Kirchhoff integral.
  • 35
    • 84927297161 scopus 로고    scopus 로고
    • Some examples of satellite structure in simulated reconstructions of s-wave scattering holograms are shown in Ref. 5, as a function of the magnitude of the ratio f0/ rj is varied.

* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.