Bergeron, D.
, Cessna, J.
, Broder, B.
, Pibida, L.
, Fitzgerald, R.
, DiGiorgio, M.
, Napoli, E.
and Zimmerman, B.
(2024),
Activity standard and calibrations for 227Th with ingrowing progeny, Applied Radiation and Isotopes, [online], https://doi.org/10.1016/j.apradiso.2024.111326, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=957117
(Accessed November 23, 2024)
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Activity standard and calibrations for 227Th with ingrowing progeny
Published
Author(s)
, , , , , , Elisa Napoli,
Abstract
Thorium-227 was separated from its progeny and standardized for activity by the triple-to-double coincidence ratio (TDCR) method of liquid scintillation counting. Confirmatory liquid scintillation-based measurements were made using efficiency tracing with 3H and live-timed anticoincidence counting (LTAC). The separation time and the efficiency of the separation were confirmed by gamma-ray spectrometry. Calibrations for reentrant pressurized ionization chambers, including commercial radionuclide calibrators, and a well-type NaI(Tl) detector are discussed.Citation
Applied Radiation and Isotopes
Volume
209
Pub Type
Journals
Download Paper
Keywords
Th-227, Ra-223, primary standard, decay chain, progeny ingrowth, dose calibrator, gamma counter, decay data, targeted alpha therapy, precision medicine, administered activity
Citation
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Created April 20, 2024, Updated May 14, 2024