Dosage du carbone dans quelques metaux purs par irradiation dans les photons γ |
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Authors: | G Revel |
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Institution: | (1) Centre d'Etudes de Chimie Métallurgique, 94 Vitry-sur-Seine, (France) |
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Abstract: | A method is described for the determination of carbon in iron, chromium, nickel, and molybdenum, using the12C (γ, n)11C reaction. The samples are irradiated with the bremstrahlung from a 35 MeV electron beam impinging a platinum target. Two
apparatuses for the separation of carbon are described. The11C* activity of the sample is compared with the activities of two graphite standards, counting the positron annihilation gamma
rays. The limit of detection is 0.02 μg/g of carbon in high-purity iron.
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