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SHS investigation development is considered from the geographical and historical viewpoint. 3 stages are described. Within Stage 1 the work was carried out in the Department of the Institute of Chemical Physics in Chernogolovka where the scientific discovery had been made. At Stage 2 the interest to SHS arose in different cities and towns of the former USSR. Within Stage 3 SHS entered the international scene. Now SHS processes and products are being studied in more than 50 countries.
Abstract
IDENTIFICATION OF PHASES
The qualitative identification of phase depends, ultimately, upon the measurement of the precise locations and intensities of the diffraction lines. Interplanar spacings corresponding to the diffracted X-rays are to be found first, and then intensities are measured either by a diffractometer, which can give excellent results, when the Ni- or singlecrystal monochromator is used as the filter.
Principle of Superposition of X-Ray Patterns
It is well-known that X-rays diffracted by incoherent planes are according to the principle of superposition of intensities. The same principle is followed by X-ray patterns produced from different crystalline substances. Considering a system consisting of two phases denoted by capital letters, and let the same notation represent their fingerprints as peaks, then....
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Authors:Bentham Science Books