Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8209367 | Applied Radiation and Isotopes | 2016 | 4 Pages |
Abstract
Using NIST-calibrated solutions of 131Ba and 131I in the 5Â mL NIST ampoule geometry, measurements were made in three NIST-maintained Capintec activity calibrators and the NIST Vinten 671 ionization chamber to evaluate the suitability of using 133Ba as a calibration surrogate for 131I. For the Capintec calibrators, the 133Ba response was a factor of about 300% higher than that of the same amount of 131I. For the Vinten 671, the Ba-133 response was about 7% higher than that of 131I. These results demonstrate that 133Ba is a poor surrogate for 131I. New calibration factors for these radionuclides in the ampoule geometry for the Vinten 671 and Capintec activity calibrators were also determined.
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Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
B.E. Zimmerman, D.E. Bergeron,