Abstract
The acquisition of time-stamped list data provides additional information useful to gamma-spectrometry analysis. A novel technique is described that uses non-linear least-squares fitting and the Levenberg–Marquardt algorithm to simultaneously determine parent-daughter atoms from time sequence measurements of only the daughter radionuclide. This has been demonstrated for the radioactive decay of short-lived radon progeny (214Pb/214Bi, 212Pb/212Bi) described using the Bateman first-order differential equation. The calculated atoms are in excellent agreement with measured atoms, with a difference of 1.3–4.8% for parent atoms and 2.4–10.4% for daughter atoms. Measurements are also reported with reduced uncertainty. The technique has potential to redefine gamma-spectrometry analysis.
Original language | English |
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Pages (from-to) | 191-196 |
Number of pages | 6 |
Journal | Journal of Radioanalytical and Nuclear Chemistry |
Volume | 313 |
Issue number | 1 |
DOIs | |
State | Published - Jul 1 2017 |
Externally published | Yes |
Keywords
- Gamma-spectrometry
- List mode
- Radon progeny
- Time sequence