Direct phase determination of large macromolecular crystals using three-beam X-ray interference

We report for the first time the direct determination of x-ray-reflection phases of a large-unit-cell volume, 350 000 A {sup 3}, macromolecular crystal using three-beam diffraction. The crystal polarity (enantiomorph) is determined unambiguously from the peak-intensity measurement. Quantitative anal...

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Bibliographic Details
Published in:Physical review letters 1991-11, Vol.67 (22), p.3113-3116
Main Authors: SHIH-LIN CHANG, KING, H. E, MAU-TZAI HUANG, YAN GAO
Format: Article
Language:English
Subjects:
665100 - Nuclear Techniques in Condensed Matter Physics - (1992-)
COHERENT SCATTERING
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Condensed matter: structure, mechanical and thermal properties
CRYSTAL STRUCTURE
CRYSTALS
DIFFRACTION
Exact sciences and technology
INTERFERENCE
Liquid crystals
MODIFICATIONS
MOLECULAR CRYSTALS
Physics
SCATTERING
STRUCTURE FACTORS
Structure of solids and liquids
crystallography
X-RAY DIFFRACTION
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Summary:We report for the first time the direct determination of x-ray-reflection phases of a large-unit-cell volume, 350 000 A {sup 3}, macromolecular crystal using three-beam diffraction. The crystal polarity (enantiomorph) is determined unambiguously from the peak-intensity measurement. Quantitative analysis of phase angle, with a scaling scheme for intensities, is presented.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.67.3113