Measurement of absolute γ-ray emission probabilities in the decay of 227Ac in equilibrium with its progeny
Year: 2018
Type: article
Abstract: The emission probabilities of γ rays produced in the 227Ac decay series were determined by high-resolution γ-ray spectrometry of sources with standardised activity. The sources were prepared quantitatively on glass discs by drop deposition of a solution with 227Ac in radioactive equilibrium with its daughter nuclides. Their activity was measured by a primary standardisation technique based on alpha-particle counting at a defined low solid angle. Four laboratories performed γ-ray spectrometry and derived absolute γ-ray intensities. Mean values were calculated and compared with literature data and the currently recommended evaluated data. New values on certain γ-ray emission probabilities are proposed.
Source: Applied Radiation and Isotopes
Institutions: European Commission, Joint Research Center, Joint Research Centre, Joint Research Centre, Joint Research Centre, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Laboratoire d'Intégration des Systèmes et des Technologies, CEA Paris-Saclay, Laboratoire National Henri Becquerel, Český metrologický institut, National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA Casaccia Research Centre, National Institute of Ionizing Radiation Metrology
Language: English
Subfield: Radiation
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,220
Award: G2766833340
OpenAlex ID: W2889416554