Fitzgerald, R.
(2009),
An Automated Ionization Chamber for Secondary Radioactivity Standards, Applied Radiation and Isotopes
(Accessed October 26, 2025)
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An Automated Ionization Chamber for Secondary Radioactivity Standards
Published
Author(s)
Abstract
We report on the operation and characterization of a new ionization chamber system, called AUTOIC, featuring a commerical digital electrometer and a commerical robotic sample changer. The ralative accuracy of the electrometer was improved significantly beyond the manufacturer's specifications through an in-house calibration of the various ranges, applied via software. The measurement percision and repeatability of the system have been determined by measuring multiple samples of the same radionuclide over the span of two or three years. The linearity of the system was examined by following the decay of Tc-99m, Mo-99 and Xe-133 sources for up to 19 half-lives and determining half-life values. All of these values agree with the accepted literature values, within their combined, small, uncertainties.Citation
Applied Radiation and Isotopes
Volume
68
Pub Type
Journals
Keywords
ionization chamber, radioactivity
Citation
Issues
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Created December 8, 2009, Updated February 19, 2017