OASIS: a computer program for breaking phase ambiguity in one-wavelength anomalous scattering or single isomorphous substitution (replacement) data

The phase problem is reduced to a sign problem once the anomalous‐scatterer or the replacing‐heavy‐atom sites are located. OASIS adopts the CCP4 format [Collaborative Computational Project, Number 4 (1994). Acta Cryst. D50, 760–763]. It applies a direct‐method procedure to break the phase ambiguity...

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Bibliographic Details
Published in:Journal of applied crystallography 2000-06, Vol.33 (3-2), p.980-981
Main Authors: Hao, Q., Gu, Y. X., Zheng, C. D., Fan, H. F.
Format: Article
Language:English
Subjects:
Communication, education, history, and philosophy
Condensed matter: structure, mechanical and thermal properties
Educational aids
Exact sciences and technology
Laboratory computer use
Physics
Single-crystal and powder diffraction
Structure of solids and liquids
crystallography
X-ray diffraction and scattering
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Summary:The phase problem is reduced to a sign problem once the anomalous‐scatterer or the replacing‐heavy‐atom sites are located. OASIS adopts the CCP4 format [Collaborative Computational Project, Number 4 (1994). Acta Cryst. D50, 760–763]. It applies a direct‐method procedure to break the phase ambiguity intrinsic to one‐wavelength anomalous scattering (OAS) or single isomorphous replacement (SIR) data.
ISSN:1600-5767
0021-8898
1600-5767
DOI:10.1107/S0021889800001424