Determination of Texture Pole Figures Using Picker FACS-1Apparatus.

摘要

The Picker FACS-1 Apparatus consists of a three axis goniometer, with associated x-ray generating and detecting equipment, controlled by a dedicated PDP-8 minicomputer. By means of a control program developed at Vanderbilt University, it is possible to generate values of integrated x-ray diffraction peak intensity over preselected goniometer rotation angles. A specimen of the type proposed by Lopata and Kula, consisting of a plane cut at equal angles to the principal material axes (54 deg 44 ft), can be conveniently rotated to obtain data for an entire quadrant of the stereographic projection. Equations are presented for converting goniometer angles to latitude and longitude, and for converting latitude and longitude to rectangular coordinates for automatic plotting. A description of the plotting routine is presented along with examples of several texture plots. (Author)