Liquid Scintillation Spectroscopy of <sup>227</sup>Ac and Daughters
- 1 Institute for Energy Technology, P.O.Box, NO-2027 Kjeller, Norway
- 2 Institute for Energy Technology, P.O.Box, NO-2027 Kjeller, Norway
- 3 Algeta ASA, P.O.Box 54, NO-0411 Kjels?s, Norway
- 4 Algeta ASA, P.O.Box 54, NO-0411 Kjels?s, Norway
- 5 Algeta ASA, P.O.Box 54, NO-0411 Kjels?s, Norway
Abstract
In order to find a fast and reliable method for measurements of organic and aqueous liquid phases containing a- and b-emitters in mixtures we developed a method based on Liquid Scintillation Counting (LSC) using Quantulus Low Level Spectrometer. The use of low level LSC instead of g-spectroscopy allows reduced sample activity, shorter count rates and use of sample changer. This is of great advantage when many samples have to be measured during a short time period. The main nuclides of interest were 227 Ac and 223 Ra. 227 Ac does not have any appropriate g-radiation, therefore measurements of the nuclei of interest must be based on a- and b-spectroscopy. In this study, it is shown that analyses of the radionuclidic purity of the liquid phases could be determined by a- and b-spectroscopy with Quantulus.
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