On the stability of (3)H and (63)Ni Ultima Gold liquid scintillation sources.

Details

Serval ID
serval:BIB_4712C23B9948
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
On the stability of (3)H and (63)Ni Ultima Gold liquid scintillation sources.
Journal
Applied Radiation and Isotopes
Author(s)
Nedjadi Y., Duc P.F., Bochud F., Bailat C.
ISSN
1872-9800 (Electronic)
ISSN-L
0969-8043
Publication state
Published
Issued date
2016
Peer-reviewed
Oui
Volume
118
Pages
25-31
Language
english
Abstract
The stability of (3)H and (63)Ni samples, made with Ultima Gold and Ultima Gold AB using eight aqueous fractions ranging between 0.1% and 10%, was monitored over a period of 32 weeks. Counting rate losses were measured in all cases, but were found to be particularly severe for samples with low aqueous fractions. Hydrodynamic diameter measurements of the reverse micelles of (3)H and (63)Ni in Ultima Gold and Ultima Gold AB samples were performed with dynamic light scattering. For Ultima Gold, the micelle diameters were measured to be about 2nm and slightly dependent of the aqueous fraction, while for Ultima Gold AB they were found to vary strongly with the aqueous fraction and range between 1 and 4nm. The hypothesis that the counting rate instabilities derive from changes in the sizes of micelles was tested by measuring them four times over the monitoring period. The measurement results do not support this claim.
Pubmed
Create date
16/09/2016 20:40
Last modification date
20/08/2019 13:53
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