Title: Measurement of absolute γ-ray emission probabilities in the decay of 227Ac in equilibrium with its progeny
Authors: MAROULI MARIALUTTER GUILLAUMEPOMME STEFAANVAN AMMEL RAFHULT MIKAELPIERRE S.DRYAK P.CARCONI P.FAZIO A.BRUCHERTSEIFER FRANKMORGENSTERN ALFRED
Citation: APPLIED RADIATION AND ISOTOPES vol. 144 p. 34-46
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Publication Year: 2019
JRC N°: JRC111568
ISSN: 0969-8043 (online)
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC111568
DOI: 10.1016/j.apradiso.2018.08.023
Type: Articles in periodicals and books
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 disks 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-emission probabilities are proposed.
JRC Directorate:Nuclear Safety and Security

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