α(PS)-γ(Ge) digital anti-coincidence spectroscopy and its application to activity measurement of 225 Ac.

Autor: Mori KI; Sector of Nuclear Science Research, Japan Atomic Energy Agency, Japan., Yamada T; Atomic Energy Research Institute, Kindai University, Japan. Electronic address: tyamada@kindai.ac.jp., Sato Y; Research Institute for Measurement and Analytical Instrumentation, National Metrology Institute of Japan, Japan., Nagatsu K; Department of Advanced Nuclear Medicine Sciences, National Institutes for Quantum and Radiological Science and Technology, Japan., Kikunaga H; Research Center for Electron Photon Science, Tohoku University, Japan.
Jazyk: angličtina
Zdroj: Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine [Appl Radiat Isot] 2023 Dec; Vol. 202, pp. 111061. Date of Electronic Publication: 2023 Sep 29.
DOI: 10.1016/j.apradiso.2023.111061
Abstrakt: Activity of 225 Ac was measured by the digital anti-coincidence spectroscopy technique using a 4πα-γ detector configuration, composed of a sandwich type 4π plastic scintillator and Ge detectors. Ultrathin plastic scintillators were used for selective detection of α-particles emitted from 225 Ac and its progenies, and the α-counting efficiencies of a 4π plastic scintillation detector for individual nuclides in the decay chain were determined as well. A list-mode multichannel analyzer was employed to record coincidence/anti-coincidence events for off-line analyses. The time difference distribution spectra revealed α-particle emission following 213 Po decay without β-particle interference from 213 Bi.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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