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Digitale Medien

Direct determination of X-Ray reflection phases for noncentrosymmetric crystals (1985)

Chang, S. -L. ; Valladares, J. A. Prado

Springer

Applied physics 37 (1985), S. 57-64

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Details

ISSN: 1432-0630

Schlagwort(e): 61.10

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau , Physik

Notizen: 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 edgeλ E 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〈λ E ,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.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00617869

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