Nondestructive x-ray microanalysis bidirectional scanning and data acquisition system

摘要

A system for making fast scans of specimens and acquiring data was developed at the oak Ridge Y-12 Plant. An LSI 11/23 computer using the RT11 operating system controls the scan and data acquisition. Scan software was written which would program a Unidex III stepping motor controller to make the scan motions while the position was monitored and the data acquired through the computer's timer/counter boards from the multichannel analyzer's four region of interest (ROI) outputs. Small areas of a part or specimen are scanned by moving the part back and forth in the x-ray beam using stepping motor actuated tables. A detector receives the scattered x-rays from the part and sends a signal to the multichannel analyzer which digitizes it. After the data has been acquired using the scan computer, the data is then transferred to a PC to where it is processed and an image is generated and displayed for analysis.