Abstract
A multipurpose, high temperature, Debye-Scherrer camera has been constructed which has a temperature range from −100 to 1050°C. Temperatures may be controlled to less than 1 C° with gradients essentially nonexistent. Samples are hung vertically to minimize any chance of sagging, and are rotated in a ball bearing guided mechanism. The unit may be operated in high vacuum or in special atmospheres. The film cassette is detachable and self-positioning. Using the camera fiducial marks, accuracies to 1 part in 5000 are obtainable. The film cassette covers the range from −45°2θ to 135°2θ with the region from −12°2θ to 12°2θ blocked by the beam stop. Exposure times are comparable with standard Debye-Scherrer cameras. The general construction is relatively simple. Furnace elements are easily replaceable. Water cooling paths are straightforward with all connections between detachable parts of the unit being external. The cover assembly which supports the specimen and its drive mechanism is self-aligning to assure correct centering of the specimen in the camera.
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