| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8209844 | Applied Radiation and Isotopes | 2015 | 5 Pages |
Abstract
A triple-to-double coincidence ratio (TDCR) counter was recently constructed at IRA-METAS for liquid scintillation based primary activity standardisations. A description of its optical chamber, efficiency change tools, photomultiplier tubes (PMTs) and electronics is given. This TDCR system was validated by measuring several standard solutions of beta emitters including 45Ca, 14C, 63Ni and 3H. The activity concentrations, obtained from these measurements and efficiencies computed with a FORTRAN code we developed for symmetric and asymmetric PMTs, agree with the certified values within uncertainties.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Youcef Nedjadi, Claude Bailat, Yvan Caffari, Philippe Cassette, François Bochud,