Bergeron, D.
, Cessna, J.
, Fitzgerald, R.
, Hamad, G.
, Laureano-Perez, L.
, Pibida, L.
and Zimmerman, B.
(2023),
Liquid scintillation efficiencies, gamma-ray emission intensities, and half-life for Gd-153, Applied Radiation and Isotopes, [online], https://doi.org/10.1016/j.apradiso.2023.111108, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=956160
(Accessed December 26, 2024)
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Liquid scintillation efficiencies, gamma-ray emission intensities, and half-life for Gd-153
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Author(s)
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Abstract
Gadolinium-153 was standardized for activity by live-timed anticoincidence counting and an ampoule was submitted to the international reference system (SIR). Absolute emission intensities for the main γ rays were determined with calibrated high-purity germanium (HPGe) and lithium-drifted silicon (Si(Li)) detectors. A revised decay scheme is indicated, with no probability of direct electron capture to the 153Eu ground state. Triple-to-double coincidence ratio (TDCR) efficiency curves indicate that the revised decay scheme is consistent with experiment. Half-life measurements agree with a previous NIST determination and show no sensitivity to chemical environment.Citation
Applied Radiation and Isotopes
Volume
203
Pub Type
Journals
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Keywords
Activity standard, intercomparison, international reference system, electron capture, decay scheme, nuclear decay data, TDCR, efficiency tracing
Citation
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Created November 9, 2023, Updated November 27, 2023