Nondestructive on-line density measurement of organic material on a steel conveyor belt using x-ray scattering

Jacob F. Moskowitz

doi:10.1117/12.138655

2 February 1993 Nondestructive on-line density measurement of organic material on a steel conveyor belt using x-ray scattering

Jacob F. Moskowitz

Author Affiliations +

Proceedings Volume 1737, Neutrons, X Rays, and Gamma Rays: Imaging Detectors, Material Characterization Techniques, and Applications; (1993) https://doi.org/10.1117/12.138655
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

The motivation of this work was to develop a non-contacting technique for rapidly measuring the density of organic material processed on a steel surface. Various alternatives were considered. The steel base effectively prevented the use of most transmission methods, while the bulk of the organics made optical and IR methods impractical. A technique based on X-ray scattering was ultimately employed. Because the intensity of Compton scattering is proportional to electron density which is in turn roughly proportional to atomic weight, this affords a method of mass measurement that is essentially independent of variations in composition to a first order of approximation. A simple one-dimensional model based on differential cross-sections and exponential attenuation law was developed and analyzed numerically. Experimental results were compared with the results of this analysis. While the model correctly predicted the general trend of the experimental data within the range of interest, it did not match the data over the full range. This was attributed to neglecting finite geometric effects in the model used.

Citation Download Citation

Jacob F. Moskowitz "Nondestructive on-line density measurement of organic material on a steel conveyor belt using x-ray scattering", Proc. SPIE 1737, Neutrons, X Rays, and Gamma Rays: Imaging Detectors, Material Characterization Techniques, and Applications, (2 February 1993); https://doi.org/10.1117/12.138655

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