ISSN:
1600-5767
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Geosciences
,
Physics
Notes:
A method is described for least-squares refinement of lattice parameters from powder diffraction measurements. Unusual features are: (1) an individual standard error can be assigned to each line, (2) variances and covariances for all parameters are calculated from those errors, (3) the three parameters of a second-degree correction curve are added to the unknowns, and (4) the method uses both the measurements of internal standard lines – if any – and the lines of the substance under investigation for the simultaneous refinement of all unknowns. Because of the last-mentioned feature, the method is especially suitable for measurements obtained from Guinier cameras. The description of a computer program based on this method is added.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0021889874010478
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