Liquid Scintillation Spectroscopy of ²²⁷Ac and Daughters

D. Ø. Eriksen, B. Ryningen, B. Schoultz, G. Salberg, R. H. Larsen

Algeta ASA, P.O.Box 54, NO-0411 Kjels?s, Norway.
Institute for Energy Technology, P.O.Box, NO-2027 Kjeller, Norway.

DOI: 10.4236/jasmi.2012.21007                

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 ²²⁷Ac and ²²³Ra. ²²⁷Ac 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.

Keywords

Dipex; LSC; Ra-223; Ac-227; Spectroscopy; Quantulus

Conflicts of Interest

The authors declare no conflicts of interest.

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