ANALYSES OF H*(10) DOSE RATES MEASURED IN ENVIRONMENT CONTAMINATED BY RADIOACTIVE CAESIUM: CORRECTION OF DIRECTIONAL DEPENDENCE OF SCINTILLATION DETECTORS
| Autor: | Shuichi Tsuda, Kimiaki Saito, Tadayoshi Yoshida, Ryo Okumura, Minoru Tanigaki |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Physics::Instrumentation and Detectors 020209 energy Physics::Medical Physics Cesium chemistry.chemical_element 02 engineering and technology 010501 environmental sciences Scintillator 01 natural sciences Crystal Optics Radiation Monitoring 0202 electrical engineering electronic engineering information engineering Radiology Nuclear Medicine and imaging 0105 earth and related environmental sciences Scintillation Radiation Radiological and Ultrasound Technology Equivalent dose business.industry Detector Public Health Environmental and Occupational Health General Medicine Contamination Semiconductor detector Radioactivity Semiconductors chemistry Air Pollutants Radioactive Caesium business |
| Zdroj: | Radiation Protection Dosimetry. 193:228-236 |
| ISSN: | 1742-3406 0144-8420 |
| Popis: | Ambient dose equivalent rates were measured in the environment of the Fukushima prefecture using NaI(Tl)/CsI(Tl) scintillation detectors and CdZnTe/Ge semiconductor detectors. The dose rates obtained at the same locations varied beyond uncertainty (1σ). By replacing the spectrum-dose conversion operators obtained from the anterior–posterior geometry with those from the rotational geometry, the dose rates agreed with each other within uncertainties, except for a CsI(Tl) scintillation detector with a considerably flat crystal configuration, due to its excessive directional dependence. |
| Databáze: | OpenAIRE |
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