Determination of transmission factors for an 85Kr beta radiation beam using an extrapolation chamber
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2017
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LATIN-AMERICAN SYMPOSIUM ON NUCLEAR PHYSICS AND APPLICATIONS; WORKSHOPS ON NUCLEAR PHYSICS AND NUCLEAR RELATED TECHNIQUES
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The 85Kr isotope is a beta-ray emitter (gas) with a half-life of 10.76 years. It is produced in the fission of Uranium and Plutonium. The origins of this isotope are the nuclear tests, the nuclear reactors and the reprocessing of nuclear fuel. In the gas release events around reactors, the 85Kr may represent a major hazard. In beta emitters, in order to evaluate the absorbed dose rate at different tissue depths, it is necessary to determine the transmission factors. In this work, the preliminary results of the determination of transmission factors of the 85Kr source of a BSS2 beta secondary standard are presented. For this purpose, an extrapolation chamber was used. The results obtained were considered acceptable, and they are within the uncertainties in comparison with the values provided by the source calibration certificate. The maximum difference between the results obtained in this work and those from the calibration certificate was 3.8%.
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POLO, IVÓN O.; CALDAS, LINDA V.E. Determination of transmission factors for an 85Kr beta radiation beam using an extrapolation chamber. In: LATIN-AMERICAN SYMPOSIUM ON NUCLEAR PHYSICS AND APPLICATIONS; WORKSHOPS ON NUCLEAR PHYSICS AND NUCLEAR RELATED TECHNIQUES, October 23-27, 2017, Havana, Cuba. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/28600. Acesso em: 30 Dec 2025.
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