A laser-based measurement device was developed so that the dimensions of highly radioactive specimens could be monitored over the span of several years. The device employs two laser curtain and diode detector pairs that are mounted orthogonally to each other. Each pair has its own controller, which is used to obtain 3500 simultaneous measurements of the height and diameter of the specimens. The precision of the measurements is less than 10 µm over a period of more that two years. The device was also used to measure various parallelepipeds. It was possible to determine the dimensions of these parallelepipeds and the angle between the sides. Several improvements to the device are recommended.
Revised: November 10, 2005 |
Published: January 5, 2004
Citation
Strachan D.M., W.C. Buchmiller, W.R. Park, and J.T. Munley. 2004.A LASER-BASED MEASUREMENT DEVICE FOR HIGHLY RADIOACTIVE SPECIMENS.Instrumentation Science & Technology 32, no. 1:1-12.PNNL-SA-38937.