Radioactive stability check devices are recommended to check the constancy of the Absolute Dosimetry equipment. Moreover, they can be used to determine air density correction factors when using air vented ionization chambers.
CDC for cylindrical ionization chambers: check source includes a shielded 90Sr source. Various adapters are available to accommodate the full range of our cylindrical chambers for Absolute Dosimetry.
CDP: consists of a 90Sr shielded source in a protective container. Adapters for the parallel plate ionization chambers from IBA Dosimetry are available.
The check source library of the DOSE-1 allows for an initial calibration of the check devices and storage of the data in the internal library. Upon subsequent constancy measurements, the DOSE-1 automatically corrects for the decay of the radionuclide. The determined air density factor can be entered in the DOSE-1 and is automatically used for correcting the measurement.
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