Comparison of Two Methods for High Purity Germanium Detector Efficiency Calibration for Charcoal Canister Radon Measurement
AutoriKrneta-Nikolić, Jelena D.
Pantelić, Gordana K.
Živanović, Miloš Z.
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The charcoal canister method of radon measurement according to US Environment Protection Agency protocol 520/5-87-005 is widely used for screening. This method is based on radon adsorption on coal and measurement of gamma radiation of radon daughters. For the purpose of gamma spectrometry, appropriate efficiency calibration of the measuring system must be performed. The most usual method of calibration is using standard canister, a sealed canister with the same matrix and geometry as the canisters used for measurements, but with the known activity of radon. In the absence of standard canister, a different method of efficiency calibration has to be implemented. This study presents the results of efficiency calibration using the EFFTRAN efficiency transfer software. Efficiency was calculated using a soil matrix cylindrical secondary reference material as a starting point. Calculated efficiency is then compared with the one obtained using standard canister and applied to a realistic measu...rement in order to evaluate the results of the efficiency transfer.
Izvor:Radiation Protection Dosimetry, 2014, 162, 1-2, 47-51
- Nove tehnologije za monitoring i zaštitu životnog okruženja od štetnih hemijskih supstanci i radijacionog opterećenja (RS-43009)
- 2nd International Conference on Radiation and Dosimetry in Various Fields of Research RAD and The 2nd East European Radon Symposium (SEERAS), May 27-30, 2014, Nis, Serbia