Computer Programs for Automation of Two Small-Angle X-Ray Scattering Diffractometers.
ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MASS
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SPASTIC 76 is an update of previously reported programs written for a minicomputer to permit data acquisition with a small-angle X-ray diffractometer. SPASTIC denotes System for Programming Angles, Scaler, and Timer by Internal Counting, and indicates the general approach used for automation, involving a simple interface and stepping motor control. The present programs are written for two diffractometers of the Bonse-Hart and the Kratky designs, and run on a PDP-8L computer with 8,192 words of core memory. The various programs include routines for finding the zero position and integral breadth of the primary beam, and for step-scanning through the scattering regions. The latter routine incorporates integrations for the Porod invariant. Author
- Physical Chemistry
- Computer Programming and Software
- Computer Hardware