12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > The development of an alpha / beta separation l...
View graph of relations

« Back

The development of an alpha / beta separation liquid scintillation cocktail for aqueous samples.

Research output: Contribution to journalJournal article

Published

Journal publication date08/1993
JournalJournal of Radioanalytical and Nuclear Chemistry
Journal number2
Volume172
Number of pages8
Pages341-348
Original languageEnglish

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.