Simultaneous determination of Ra and Th nuclides, 238U and 227Ac in uranium mining waters by gamma-ray spectrometry
For the investigation of flooding processes in uranium mines, Ra and Th nuclides as well as 238U and 227Ac activities in waters were simultaneous analyzed by gamma-ray spectrometry. The activities of 227Ac and 228Th, not directly determinable by gamma-ray spectrometry, can be calculated from two consecutive measurements (approximately 25 d delay) of the progeny 227Th and 224Ra. For the short-lived radionuclides 234Th, 227Th, 223Ra and 224Ra a correction of the results to the sampling date is necessary.
Kohler
M
Verein fur Kernverfahrenstechnik und Analytik Rossendorf e. V. (VKTA), Dresden, Germany. M.Koehler@vkta-rossendorf.de
Niese
S
Gleisberg
B
Jenk
U
Nindel
K