Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1878631 | Applied Radiation and Isotopes | 2014 | 5 Pages |
Abstract
A radioactive solution of 111Ag, standardised by the absolute measurement methods 4Ï(PC)-γ and 4Ï(LS)-γ coincidence counting at the National Physical Laboratory (NPL), was measured by two independently calibrated HPGe γ spectrometers in order to estimate the γ emission intensities and to determine the absolute intensity, with the aim of improving the currently published values. An absolute intensity value of 6.68 (7)% was obtained for the 342.1 keV γ emission, which is in agreement with previously reported values, but greatly reduces the uncertainty. Additionally, this work proposes a new emission intensity for the 450.0 keV γ emission that has not been previously reported, with an absolute intensity of 0.000482 (12)%. An investigation of the published γ emission intensities shows significant discrepancies that require resolution.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Sean Collins, John Keightley, Chris Gilligan, Joel Gasparro, Andy Pearce,