Evaluation of an Imaging Furnace as a Heat Source for X-Ray Diffractometry

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Abstract
The objective of this investigation was to evaluate the image furnace as a heat source for high temperature x-ray diffractometry. Thermal energy was supplied by a carbon arc whose light was focused by two 1.52 m diam paraboloidal mirrors; the light flux being controlled by an iris diaphragm. A stationary sample, located at the focal point of the second mirror, was used with an x-ray diffractometer of unique design. These studies showed that the sample temperature could be adequately controlled and programmed. The thermal gradients in the sample were significant but not prohibitive. The principal limitation was the difficulty in accurately measuring temperature above 1700°C because of the scattered light superimposed upon the emitted light.

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