Extraction and purification of 227Ac and development of solid 219Rn source

Autor:	Yaohui Zhou, Xiaogang An, Quan Tang, Detao Xiao, Shoukang Qiu
Rok vydání:	2014
Předmět:	Chromatography Chemistry TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY Extraction (chemistry) Physical and Theoretical Chemistry
Zdroj:	Radiochimica Acta. 102:169-174
ISSN:	2193-3405 0033-8230
DOI:	10.1515/ract-2014-2117
Popis:	The method of 227Ac extraction and purification from high-grade uranium ore and the test results of solid 219Rn source made from 227Ac are reported in this paper. With five years of follow-up monitoring, radiochemical purity of 227Ac and the emanation power of solid 219Rn source has been checked by emanation method and γ-spectrometry, the results showed that 228Th, 231Pa and 226Ra have been effectively removed and the emanation power of 219Rn source is about 80%. The long-term test results also showed that the 219Rn emanation rate remains stable in a wide air humidity range (40% ∼ 90%). Though the 219Rn source has not been accurately calibrated yet, it has been applied in the research for delay coincidence measurement of 223Ra.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ca5f8e2c931341aecff94d4e6e8a5b0b https://doi.org/10.1515/ract-2014-2117 Zobrazit plný text záznamu