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Computer searching of the Jcpds powder Diffraction File

Published online by Cambridge University Press:  06 March 2019

Faden F. Dismore
Faden F. Dismore*
Affiliation:
E.I.du Pont de Nemours & Company Wilmington, Delaware 19898
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Abstract

Jackson Laboratory is using computer searching of the powder diffraction file on an “in-house” IBM 365/65 computer for about 1000 searches per year. This paper will discuss our experiences with the search program.

A Philips Automatic Powder Diffractometer (APD), modified to communicate with an XDS Sigma 5 computer collects the data. A program in the Sigma 5 provides both hard copy output and a computer deck of punched cards for input to the JCPDS search program.

The JCPDS search program is indispensable for our large volume of samples . The majority of these samples are corrosion products which generally have “broad peaks, and frequently, preferred orientation.

Type
X-Ray Powder Diffraction
Information
Advances in X-Ray Analysis , Volume 20: Twenty-Fifth Annual Conference on Applications of X-ray Analysis, August 4-6, 1976 , 1976 , pp. 113 - 123
Copyright
Copyright © International Centre for Diffraction Data 1976

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References

1. Johnson, .G. G. Jr., User Guide Data Ease and Search Program, JCPDS, Swarthmore, Pa. (1975).Google Scholar
2. Johnson, .G. G. Jr., Vand, V; Ind. Eng. Chem., 59, 19 (1967).Google Scholar
3. Johnson, .G. G. Jr., Fortran IV Programs Version XII, JCPDS, Swarthmore, Pa. (1970).Google Scholar