Abstract
THE aspects of technique that influence the quality of the X-ray powder photograph can be classified into two groups: those concerned with the kind and purity of the X-radiation; and those concerned with the camera. A battery of X-ray tube target materials is desirable to give the necessary flexibility in the selection of wave-lengths. Demountable tubes in which targets are interchangeable, or sets in which sealed-off X-ray tubes containing different target elements can be quickly interchanged, provide alternative lines of approach.
Published Version
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