| Autor: |
Richard B. Gammage, Joseph S. Cheka, Thomas F. Gesell |
| Rok vydání: |
1978 |
| Předmět: |
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| Zdroj: |
Nuclear Instruments and Methods. 153:393-396 |
| ISSN: |
0029-554X |
| Popis: |
A high efficiency for BeO ceramic exoelectron dosimeters is demonstrated in the integrated monitoring of Mylar radon at concentrations close to natural background levels. Electrostatic collection of radon daughters onto aluminized mylar foil covering a BeO disk is achieved inside a porous, hemispherical chamber of the type developed by Costa-Ribeiro et al. This application of the exoelectron dosimeter for radon monitoring inside dwellings is a particularly favorable one; the lack of excessively high humidities and the clean conditions inside the hemisphere favor the reliable performance of the exoelectron dosimeter. Radon concentration - exposure times of 3 pCi h/l, or more, can be measured with an accuracy of about ±25% when the temperature and relative humidity are fluctuating. This means that radon concentrations of a few tenths of a pCi/l can be measured using exposure times of only a day or two. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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