Computer graphics for quality control in the INAA of geological samples |
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Authors: | J. N. Grossman P. A. Baedecker |
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Affiliation: | (1) U.S. Geological Survey, Mail Stop 923, 22091 Reston, Virginia, USA |
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Abstract: | A data reduction system for the routine instrumental activation analysis of samples is described, with particular emphasis on interactive graphics capabilities for evaluating analytical quality. Graphics procedures have been developed to interactively control the analysis of selected photopeaks during spectral analysis, and to evaluate detector performance during a given counting cycle. Graphics algorithms are also used to compare the data on reference samples with accepted values, to prepare quality control charts to evaluate long term precision and to search for systematic variations in data on reference samples as a function of time. |
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