Simulation study of personal dose equivalent for external exposure to radioactive cesium distributed in soil
| Autor: | Fumiaki Takahashi, Daiki Satoh, Wesley E. Bolch, Takuya Furuta, Choonsik Lee |
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| Rok vydání: | 2017 |
| Předmět: |
Nuclear and High Energy Physics
Chemistry Equivalent dose 020209 energy Monte Carlo method Radiochemistry chemistry.chemical_element 02 engineering and technology Radiation Effective dose (radiation) 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Nuclear Energy and Engineering Caesium Conversion coefficients Activity concentration 0202 electrical engineering electronic engineering information engineering Measurable quantity |
| Zdroj: | Journal of Nuclear Science and Technology. 54:1018-1027 |
| ISSN: | 1881-1248 0022-3131 |
| DOI: | 10.1080/00223131.2017.1344157 |
| Popis: | The personal dose equivalent was calculated for the public (newborns; 1-, 5-, 10-, and 15-year-old children; and adults) in an environment contaminated with radioactive cesium (134Cs and 137Cs) distributed in a soil at specific depths of 0.0, 0.5, 2.5, 5.0, 10.0, and 50.0 g/cm2, and the conversion coefficients for converting activity concentration to personal dose equivalent rate were provided for each age group. Monte Carlo calculations were performed using pediatric and adult computational phantoms incorporated into a particle and heavy ion transport code system. Compared with the effective dose and ambient dose equivalent at a height of 100 cm above the ground, the personal dose equivalent was found to provide a good estimate as a measurable quantity for the effective dose and did not exceed the ambient dose equivalent even in the environmental radiation fields, while the personal dose equivalent values increased for younger subjects. The weighted-integral method to obtain the personal dose equ... |
| Databáze: | OpenAIRE |
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