Seasonal Variation of Fissile Particulate Materials in Atmospheric Deposits Collected in Niigata

Autor:	Tatemichi Okada, Masayasu Noguchi, Kaneaki Sato, Tetsuya Sanada, Tetsuo Hashimoto, Shoji Sato
Rok vydání:	1998
Předmět:	Radiation Fissile material Chemistry Particulate material medicine Mineralogy Sampling (statistics) Seasonality Neutron activation analysis medicine.disease Atmospheric sciences Fission track dating
Zdroj:	RADIOISOTOPES. 47:904-914
ISSN:	1884-4111 0033-8303
Popis:	Seasonal variations of fissile particulate materials, identified by fission track study, in monthly deposit collected in Niigata during 1985-1996 are presented. Probability of the month having larger number than the mean of monthly number of them varied with a tendency to be larger during December to April. In order to presume the origins of fissile particulate materials in deposit, ten stable elements in samples were determined by neutron activation analysis and the sizes of fissile particles were estimated by using a computer simulation. On the basis of these data, it was assumed that there were different origins of the fissile particulate materials such as soil near sampling site and Kosa dust.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::113ed53f835153f22635025ecc2c197f https://doi.org/10.3769/radioisotopes.47.12_904 Zobrazit plný text záznamu