Calibration of a scintillation dosemeter for beta rays using an extrapolation ionization chamber.
A scintillation dosemeter is calibrated for 90Sr/90Y beta rays from an ophthalmic applicator, using an extrapolation ionization chamber as a reference instrument. The calibration factor for the scintillation dosemeter agrees with that given by the manufacturer of the dosemeter within ca. 2%. The estimated overall uncertainty of the present calibration is ca. 6% (2 sd). A calibrated beta-ray ophthalmic applicator can be used as a reference source for further calibrations performed in the laboratory or in the hospital.
Hakanen
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Radiation Metrology Laboratory, Radiation and Nuclear Safety Authority, P.O. Box 14, FIN-00881 Helsinki, Finland. arvi.hakanen@stuk.fi
Sipilä
P M
PM
Kosunen
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D001610:Beta Particles; D002138:Calibration / Q000592:standards; D019544:Equipment Failure Analysis / Q000379:methods* / Q000592:standards*; D005062:European Union; D011829:Radiation Dosage; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods / Q000592:standards*; D012015:Reference Standards; D015203:Reproducibility of Results; D012588:Scintillation Counting / Q000295:instrumentation* / Q000379:methods / Q000592:standards*; D012680:Sensitivity and Specificity