| Zugriffsnummer | 45494 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Study on method for simultaneous determination of ambient dose equivalent rates and activity concentration in air for environmental radiation monitoring |
| Autor(in); Institution |
Kowatari, Munehiko; Japan Atomic Energy Agency, Nuclear Science Research Institute, Department of Radiation Protection, Tokai, Naka, JAPAN; National Institutes for Quantum and Radiological Science and Technology, Center for Advanced Radiation Emergency Medicine, Chiba, JAPAN
Tanimura, Yoshihiko; Japan Atomic Energy Agency, Nuclear Science Research Institute, Department of Radiation Protection, Tokai, Naka, JAPAN
Kessler, Patrick; University of Würzburg, Department of Radiation Oncology, Würzburg, GERMANY
Neumaier, Stefan; 6.1, Radioaktivität, PTB-Braunschweig
Röttger, Annette; 6, Ionisierende Strahlung, PTB-Braunschweig
|
| Quelle/Jahr | Radioisotopes: 70 (2021), 1, 1 - 18 |
| Availability | [online only] |
| ISSN | 0033-8303 (PRINT) ; 1884-4111 (ONLINE) |
| DOI | |
| Verlag | Japan: Japan Radioisotope Association (JRIA) |
| Freie Schlagworte | CeBr.T3 ; ambient dose equivalent-H*(10) ; emergency radiation monitoring ; radiation protection ; Monte Carlo calculation |
| Zusammenfassung | For proper environmental radiation monitoring, a method to simultaneously determine ambient dose equivalent rate and radioactivity concentration in the air by using a newly developed scintillation spectrometer, namely a CeBr.Tsub.3 spectrometer was investigated. The performance of the proposed method, including energy dependence, angular dependence and the linearity of the spectrometer (i.e. the dose rate dependence of its response), was verified by a series of measurements, conducted according to the procedure of inter-comparison of detectors used for early warning network performed by the European Radiation Dosimetry Group (EURADOS). Measurement results show that the proposed method is suitable for environmental radiation monitoring purposes. After thorough tests, the investigation on obtaining activity concentration in air from the pulse height spectrum of γ-ray was demonstrated in the laboratory by using a point-like sealed 133Ba source to simulate an artificial increase of ambient dose equivalent rate due to a radioactive cloud containing 131I and 133Xe. The photon fluence rate was obtained from the pulse height spectrum by using the unfolding method, and the activity concentration in air for radionuclides of interest could be estimated from the obtained photon fluence rate by applying the conversion coefficient evaluated via a Monte Carlo calculation. |
| Kostenfreier Zugang | Freier Zugang |
| Themenbereich der Metrologie | Ionisierende Strahlung |
Zitierung
Kowatari, M., Tanimura, Y., Kessler, P., Neumaier, S., & Röttger, A. (2021). Study on method for simultaneous determination of ambient dose equivalent rates and activity concentration in air for environmental radiation monitoring. Radioisotopes, 70(1), 1–18. https://doi.org/10.3769/radioisotopes.70.1