Pates, Jackie M. and Cook, Gordon T. and MacKenzie, Angus B. and Thomson, J. (1993) The development of an alpha / beta separation liquid scintillation cocktail for aqueous samples. Journal of Radioanalytical and Nuclear Chemistry, 172 (2). pp. 341-348. ISSN 0236-5731
Full text not available from this repository.Abstract
Scintillation cocktail components were studied with regard to their impact on pulse decay discimination (PDD) and hence the separation of alpha from beta activity, using a Packard 2250 CA alpha/beta. Di-isopropyl naphthalene (DIN) was found to be the most suitable solvent, both from safety considerations and also the fact that it acts in a very similar manner to naphthalene in stretching the pulses produced at the photomultiplier tube anode and hence enhancing the separation. Increasing the surfactant concentration and the use of dimethylanthracene (DMA) as secondary fluor degraded the cocktail's performance. PMT anode pulse shapes were found to be a useful indicator of PDD efficiency but could not give a quantitative guide.