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    National Tsing Hua University Institutional Repository > 理學院 > 物理系 > 期刊論文 >  Direct determination of X-Ray reflection phases for noncentrosymmetric crystals

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/55584

    Title: Direct determination of X-Ray reflection phases for noncentrosymmetric crystals
    Authors: S. -L. Chang;J. A. Prado Valladares
    教師: 張石麟
    Date: 1985
    Publisher: Springer Verlag
    Relation: APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, Springer Verlag, Volume 37, Issue 1, 1985, Pages 57-64
    Keywords: noncentrosymmetric crystals
    Abstract: An experimental method is described for the phase determination of x-ray reflections from noncentrosymmetric crystals. This method results from considerations on the phase dependence of line profiles in three-beam reflection-type diffractions for wavelength λ above and below a critical absorption edge λE of the heaviest constituent atom in the crystals. A relationS p =S L ·S R for phase determination is derived theoretically and verified experimentally forλ< λE ,S p being the sign of the sine of invariant phase,S L the sign defined from the line profile, andS R determined by the rotation of the crystal lattice.
    URI: http://www.springerlink.com/
    Appears in Collections:[物理系] 期刊論文

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