235U–γ emission contribution to the 186 keV energy transition of 226Ra in environmental samples activity calculations

Autor:	S.A. El-Mongy, K.A. Allam, Y.Y. Ebaid
Rok vydání:	2005
Předmět:	Nuclear physics Empirical equations Work (thermodynamics) Chemistry Gamma spectroscopy Total count General Medicine Secular equilibrium Atomic physics Counting rate
Zdroj:	International Congress Series. 1276:409-411
ISSN:	0531-5131
DOI:	10.1016/j.ics.2004.12.020
Popis:	This work aims at developing a simple and reliable empirical equation to distinguish between counting rate contributions from both 235 U and 226 Ra to the 186 keV energy region. The method has set primarily two assumptions. First was the existence of secular equilibrium between the 238 U and the 226 Ra in the samples. The calculations showed that in the total count rate of the 186 keV peak consists of 58.3% of 226 Ra and 41.7% of 235 U at a radioactive equilibrium. Second was the absence of equilibrium, this condition needed another treatment of the obtained data. Finally, simple equations have been developed to calculate 226 Ra and 235 U in unenriched samples.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b7cf53b45a6a0d9fa042aa8e2a6e45c2 https://doi.org/10.1016/j.ics.2004.12.020 Zobrazit plný text záznamu Full Text from ScienceDirect