Update of 40K and 226Ra and 232Th series γ-to-dose conversion factors for soil

Autor:	A. Sellam, E. Gasser, Ch. Roy, A. Nachab, Abdel-Mjid Nourreddine
Rok vydání:	2014
Předmět:	γ radiation Chemistry Health Toxicology and Mutagenesis Radiochemistry Environmental Chemistry General Medicine Pollution Waste Management and Disposal Dose conversion Nuclear chemistry
Zdroj:	Journal of Environmental Radioactivity. 138:68-71
ISSN:	0265-931X
Popis:	Over the last four decades, the dose conversion factors used to calculate external exposure to γ radiation from soil from 40 K and the 226 Ra and 232 Th chains have been 0.62, 0.042 and 0.46 (nGy/h per Bq/kg), respectively. This work updates these γ-to-dose conversion factors, taking into consideration the composition, depth and radius of the soil source, and importantly, updated branching ratios, with MCNPX simulations. The new conversion factors are 0.036, 0.357 and 0.482 (nGy/h per Bq/kg) for 40 K and the 226 Ra and 232 Th chains, respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::86b1f70558dcb13b345320f7c9117671 https://doi.org/10.1016/j.jenvrad.2014.08.002 Zobrazit plný text záznamu Full Text from ScienceDirect