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Characterization of the neutron flux gradients in typical irradiation channels of a TRIGA Mark II reactor

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Abstract

The neutron distribution in a defined volume (gradient) for different matrices (air, water, cellulose, biological material and silicon dioxide) in two typical irradiation channels (pneumatic tube (PT) and IC40-channel in the carousel facility) in the TRIGA Mark II reactor at the Jožef Stefan Institute (IJS) was studied. Our experiment was based on inserting Fe wires (flux monitors) into the chosen matrices. The wires were cut into small pieces after irradiation and the induced activities of 59Fe measured. The results showed that for the studied geometry the average spatial thermal neutron flux inhomogeneities (for five studied matrices) are about 2.3% in the PT-channel and about 2.9% in the IC40-channel.

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Authors and Affiliations

  1. Department of Environmental Sciences, Jožef Stefan Institute, Jamova 39, P.O. Box 3000, SI-1000, Ljubljana, Slovenia

    R. Jaćimović, V. Stibilj & L. Benedik

  2. Division of Human Health, International Atomic Energy Agency, Wagramer Strasse 5, P.O. Box 100, A-1400, Vienna, Austria

    B. Smodiš

Authors
  1. R. Jaćimović
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  2. V. Stibilj
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  3. L. Benedik
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  4. B. Smodiš
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Jaćimović, R., Stibilj, V., Benedik, L. et al. Characterization of the neutron flux gradients in typical irradiation channels of a TRIGA Mark II reactor. Journal of Radioanalytical and Nuclear Chemistry 257, 545–549 (2003). https://doi.org/10.1023/A:1025484313986

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  • DOI: https://doi.org/10.1023/A:1025484313986

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