Determination of the half-life of 127 Sb using the reference source method.
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| Název: | Determination of the half-life of 127 Sb using the reference source method. |
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| Autoři: | Liang J; Northwest Institute of Nuclear Technology, Xi'an, 710024, China; State Key Laboratory of Intense Pulse Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an, 710024, China. Electronic address: liangjianfeng@nint.ac.cn., Chen G; Northwest Institute of Nuclear Technology, Xi'an, 710024, China; State Key Laboratory of Intense Pulse Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an, 710024, China., Zhang X; Northwest Institute of Nuclear Technology, Xi'an, 710024, China; State Key Laboratory of Intense Pulse Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an, 710024, China., Guan Q; Northwest Institute of Nuclear Technology, Xi'an, 710024, China; State Key Laboratory of Intense Pulse Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an, 710024, China., Zhang X; Northwest Institute of Nuclear Technology, Xi'an, 710024, China; State Key Laboratory of Intense Pulse Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an, 710024, China., Fan J; Northwest Institute of Nuclear Technology, Xi'an, 710024, China; State Key Laboratory of Intense Pulse Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an, 710024, China., Zhang Y; Northwest Institute of Nuclear Technology, Xi'an, 710024, China; State Key Laboratory of Intense Pulse Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an, 710024, China., Ma Y; Northwest Institute of Nuclear Technology, Xi'an, 710024, China; State Key Laboratory of Intense Pulse Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an, 710024, China., Xie F; Northwest Institute of Nuclear Technology, Xi'an, 710024, China; State Key Laboratory of Intense Pulse Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an, 710024, China., Xu J; Northwest Institute of Nuclear Technology, Xi'an, 710024, China; State Key Laboratory of Intense Pulse Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an, 710024, China. |
| Zdroj: | Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine [Appl Radiat Isot] 2025 Nov; Vol. 225, pp. 112056. Date of Electronic Publication: 2025 Jul 18. |
| Způsob vydávání: | Journal Article |
| Jazyk: | English |
| Informace o časopise: | Publisher: Pergamon Press Country of Publication: England NLM ID: 9306253 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1872-9800 (Electronic) Linking ISSN: 09698043 NLM ISO Abbreviation: Appl Radiat Isot Subsets: PubMed not MEDLINE; MEDLINE |
| Imprint Name(s): | Original Publication: Oxford ; New York : Pergamon Press, c1993- |
| Abstrakt: | 127 Sb is a helpful radionuclide in nuclear forensics, yet discrepancies in previous measurements have led to a 1.8 % uncertainty in its recommended half-life value, compromising accurate activity determination. In this study, 127 Sb samples were chemically separated from the fission products of 235 U following thermal neutron irradiation at Xi'an Pulsed Reactor. The decay of 127 Sb was monitored using the reference source method with two High-Purity Germanium (HPGe) detectors, acquiring gamma spectra at equidistant intervals over 25 days (about 6.5 half-lives). A weighted least-squares fit of the decay curve yielded a half-life of 3.877 (24) days, deviating by 0.7 % from the latest recommended value of 3.85 (7) days. Our result reduces the uncertainty significantly compared to prior measurements, enhancing reliability for nuclear forensic applications. (Copyright © 2025 Elsevier Ltd. All rights reserved.) |
| 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. |
| Contributed Indexing: | Keywords: (127)Sb; Gamma ray spectrometry; HPGe; Half-life; Reference source method |
| Entry Date(s): | Date Created: 20250722 Latest Revision: 20250829 |
| Update Code: | 20250908 |
| DOI: | 10.1016/j.apradiso.2025.112056 |
| PMID: | 40695156 |
| Databáze: | MEDLINE |
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Nájsť tento článok vo Web of Science | Abstrakt: | <sup>127</sup> Sb is a helpful radionuclide in nuclear forensics, yet discrepancies in previous measurements have led to a 1.8 % uncertainty in its recommended half-life value, compromising accurate activity determination. In this study, <sup>127</sup> Sb samples were chemically separated from the fission products of <sup>235</sup> U following thermal neutron irradiation at Xi'an Pulsed Reactor. The decay of <sup>127</sup> Sb was monitored using the reference source method with two High-Purity Germanium (HPGe) detectors, acquiring gamma spectra at equidistant intervals over 25 days (about 6.5 half-lives). A weighted least-squares fit of the decay curve yielded a half-life of 3.877 (24) days, deviating by 0.7 % from the latest recommended value of 3.85 (7) days. Our result reduces the uncertainty significantly compared to prior measurements, enhancing reliability for nuclear forensic applications.<br /> (Copyright © 2025 Elsevier Ltd. All rights reserved.) |
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| ISSN: | 1872-9800 |
| DOI: | 10.1016/j.apradiso.2025.112056 |