{"title":"Detection Unit of a Gamma-Ray Spectrometer for Measuring the Volumetric Activity of Noble Radioactive Gases","authors":"V. N. Yurov, Yu. A. Trofimov, E. E. Lupar","doi":"10.1134/S1063778824090461","DOIUrl":null,"url":null,"abstract":"<p>The design and characteristics of the detection unit of a gaseous medium spectrometer for measuring gamma rays from inert radioactive gases formed in nuclear power plant reactors and entering the environment as a part of gas-aerosol emissions are described. Gamma rays from inert radioactive gases are detected by one scintillation detector based on a 51 × 51-mm CeBr<sub>3</sub> crystal in two chambers with a volume of 10<sup>4</sup> and 2 cm<sup>3</sup>. The energy range of the spectrometer is 0.05–3.0 MeV. Switching of gas inputs and outputs allows both simultaneous and alternate measurements in both chambers, which ensures the calculated dynamic range of measured inert radioactive gas activities from 10<sup>3</sup> to 10<sup>13</sup> Bq/m<sup>3</sup> with a relative measurement error of 50% in the nuclide emission lines for time intervals from 1 to 500 s, depending on the activity.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"87 10","pages":"1553 - 1559"},"PeriodicalIF":0.3000,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics of Atomic Nuclei","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063778824090461","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, NUCLEAR","Score":null,"Total":0}
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Abstract
The design and characteristics of the detection unit of a gaseous medium spectrometer for measuring gamma rays from inert radioactive gases formed in nuclear power plant reactors and entering the environment as a part of gas-aerosol emissions are described. Gamma rays from inert radioactive gases are detected by one scintillation detector based on a 51 × 51-mm CeBr3 crystal in two chambers with a volume of 104 and 2 cm3. The energy range of the spectrometer is 0.05–3.0 MeV. Switching of gas inputs and outputs allows both simultaneous and alternate measurements in both chambers, which ensures the calculated dynamic range of measured inert radioactive gas activities from 103 to 1013 Bq/m3 with a relative measurement error of 50% in the nuclide emission lines for time intervals from 1 to 500 s, depending on the activity.
期刊介绍：
Physics of Atomic Nuclei is a journal that covers experimental and theoretical studies of nuclear physics: nuclear structure, spectra, and properties; radiation, fission, and nuclear reactions induced by photons, leptons, hadrons, and nuclei; fundamental interactions and symmetries; hadrons (with light, strange, charm, and bottom quarks); particle collisions at high and superhigh energies; gauge and unified quantum field theories, quark models, supersymmetry and supergravity, astrophysics and cosmology.
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