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Towards Improved Alignment of Powder Diffractometers

Published online by Cambridge University Press:  10 January 2013

Walter N. Schreiner
Affiliation:
Philips Laboratories, North American Philips Corporation, Briarcliff Manor, New York 10510

Abstract

An improved method of alignment of a Philips diffractometer equipped with a theta-compensating slit is described. The method employs a special fluorescent screen which is flat to better than 10 microns. The procedure results in accurate alignment of the theta-compensating slit at low angles and assures reliable intensity data down to one degree two theta or less.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1986

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References

1.Results of a Round Robin Study of Systematic Errors found in Routine X-Ray Powder Diffraction Review Data,” Schreiner, W. N., Fawcett, T., Adv. X-Ray Anal. 28, 309314 (1985).Google Scholar
2.An Analysis of the Powder Diffraction File,” Snyder, R. L., Johnson, Q. C., Kahara, E., Smith, G. S., Nichols, M. C., Lawrence Livermore Laboratory (UCRL-52505), 61 pages, (June 1978).CrossRefGoogle Scholar
3.Problems in the Measurements of Large d-spacings with the Parafocussing Powder Diffractometer,” Jenkins, R., Squires, B., Norelco Reporter 29, 20 (1982).Google Scholar
4.Calibration of the Diffractometer at Low Values of Two Theta,” Jenkins, R., Horn, T., Villamizar, C., Schreiner, W. N., Adv. X-Ray Anal., 25, 289294 (1982).Google Scholar
5.Atomic Data and Nuclear Data Tables, 27, No. 1, Henke, B. L. et al. , Academic Press, (1982).Google Scholar
6. Crystals can be obtained commercially from Philips Electronics Instruments.Google Scholar
7.Blodgett, K. B., Am. Chem. Soc. J. 57, 1007 (1935).CrossRefGoogle Scholar
8.Henke, B. L., “Low Energy X-Ray Spectroscopy with Crystals and Multilayers,” Topical Conf. on Low Energy X-Ray Diagnostics, Monterey, CA., AIP Conf. Proc. 75 (1981).Google Scholar
9. JCPDS-ICDD, Joint Committee on Powder Diffraction Standards — International Centre for Diffraction Data, Swarthmore, PA 19081.Google Scholar